20121111112112 has 40 divisors (see below), whose sum is σ = 39270523329216. Its totient is φ = 9986787416576.

The previous prime is 20121111112033. The next prime is 20121111112127. The reversal of 20121111112112 is 21121111112102.

It is a super-2 number, since 2×20121111112112² (a number of 27 digits) contains 22 as substring.

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, 73617818 + ... + 73890630.

Almost surely, 2^{20121111112112} is an apocalyptic number.

It is an amenable number.

20121111112112 is a deficient number, since it is larger than the sum of its proper divisors (19149412217104).

20121111112112 is a wasteful number, since it uses less digits than its factorization.

20121111112112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 306605 (or 306599 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 17.

Adding to 20121111112112 its reverse (21121111112102), we get a palindrome (41242222224214).

The spelling of 20121111112112 in words is "twenty trillion, one hundred twenty-one billion, one hundred eleven million, one hundred twelve thousand, one hundred twelve".