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2112212111121 = 32760527553921
BaseRepresentation
bin11110101111001001101…
…001110000111100010001
321110220222200201201022200
4132233021221300330101
5234101302300023441
64254200431553413
7305413404466050
oct36571151607421
97426880651280
102112212111121
11744869742802
122a143b68b869
13124247143368
1474335784397
1539e243d57b6
hex1ebc9a70f11

2112212111121 has 24 divisors (see below), whose sum is σ = 3486890244864. Its totient is φ = 1206956229120.

The previous prime is 2112212111069. The next prime is 2112212111161. The reversal of 2112212111121 is 1211112122112.

It is a happy number.

2112212111121 is a `hidden beast` number, since 211 + 221 + 2 + 111 + 121 = 666.

It is not a de Polignac number, because 2112212111121 - 26 = 2112212111057 is a prime.

It is a super-2 number, since 2×21122121111212 (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2112212111094 and 2112212111103.

It is not an unprimeable number, because it can be changed into a prime (2112212111161) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3536241 + ... + 4090161.

It is an arithmetic number, because the mean of its divisors is an integer number (145287093536).

Almost surely, 22112212111121 is an apocalyptic number.

2112212111121 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

2112212111121 is a deficient number, since it is larger than the sum of its proper divisors (1374678133743).

2112212111121 is a wasteful number, since it uses less digits than its factorization.

2112212111121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 614461 (or 614458 counting only the distinct ones).

The product of its digits is 32, while the sum is 18.

Adding to 2112212111121 its reverse (1211112122112), we get a palindrome (3323324233233).

The spelling of 2112212111121 in words is "two trillion, one hundred twelve billion, two hundred twelve million, one hundred eleven thousand, one hundred twenty-one".

Divisors: 1 3 7 9 21 63 60527 181581 423689 544743 553921 1271067 1661763 3813201 3877447 4985289 11632341 34897023 33527176367 100581529101 234690234569 301744587303 704070703707 2112212111121