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21102111120112 = 24117313711988637
BaseRepresentation
bin1001100110001001101111…
…10101100101101011110000
32202201100020101222021202021
410303010313311211223300
510231214110421320422
6112514102004201224
74305401661666361
oct463046765455360
982640211867667
1021102111120112
1167a639a6618a0
122449892399214
13ba0bc75714b9
1452d4c1c67b68
15268daad48dc7
hex133137d65af0

21102111120112 has 80 divisors (see below), whose sum is σ = 45543205307232. Its totient is φ = 9391417896960.

The previous prime is 21102111120073. The next prime is 21102111120121.

21102111120112 is nontrivially palindromic in base 10.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4234143 + ... + 7754494.

Almost surely, 221102111120112 is an apocalyptic number.

21102111120112 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

21102111120112 is an abundant number, since it is smaller than the sum of its proper divisors (24441094187120).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21102111120112 is a wasteful number, since it uses less digits than its factorization.

21102111120112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11988866 (or 11988860 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 16.

It can be divided in two parts, 2110211 and 1120112, that added together give a palindrome (3230323).

The spelling of 21102111120112 in words is "twenty-one trillion, one hundred two billion, one hundred eleven million, one hundred twenty thousand, one hundred twelve".

Divisors: 1 2 4 8 11 16 22 44 73 88 137 146 176 274 292 548 584 803 1096 1168 1507 1606 2192 3014 3212 6028 6424 10001 12056 12848 20002 24112 40004 80008 110011 160016 220022 440044 880088 1760176 11988637 23977274 47954548 95909096 131875007 191818192 263750014 527500028 875170501 1055000056 1642443269 1750341002 2110000112 3284886538 3500682004 6569773076 7001364008 9626875511 13139546152 14002728016 18066875959 19253751022 26279092304 36133751918 38507502044 72267503836 77015004088 119898358637 144535007672 154030008176 239796717274 289070015344 479593434548 959186869096 1318881945007 1918373738192 2637763890014 5275527780028 10551055560056 21102111120112