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122312121310 = 2556543216317
BaseRepresentation
bin111000111101001011…
…1101101101111011110
3102200201010211112200001
41301322113231233132
54000443400340220
6132104525124514
711560002606601
oct1617227555736
9380633745601
10122312121310
1147966005085
121b8560b973a
13b6c32147a2
145cc444c338
1532ace6d80a
hex1c7a5edbde

122312121310 has 16 divisors (see below), whose sum is σ = 220166729856. Its totient is φ = 48923757088.

The previous prime is 122312121299. The next prime is 122312121361. The reversal of 122312121310 is 13121213221.

It is a super-2 number, since 2×1223121213102 (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 457272 + ... + 673588.

It is an arithmetic number, because the mean of its divisors is an integer number (13760420616).

Almost surely, 2122312121310 is an apocalyptic number.

122312121310 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

122312121310 is a deficient number, since it is larger than the sum of its proper divisors (97854608546).

122312121310 is a wasteful number, since it uses less digits than its factorization.

122312121310 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 272867.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 122312121310 its reverse (13121213221), we get a palindrome (135433334531).

The spelling of 122312121310 in words is "one hundred twenty-two billion, three hundred twelve million, one hundred twenty-one thousand, three hundred ten".

Divisors: 1 2 5 10 56543 113086 216317 282715 432634 565430 1081585 2163170 12231212131 24462424262 61156060655 122312121310