20120111112122 has 16 divisors (see below), whose sum is σ = 34743382695360. Its totient is φ = 8559963850848.

The previous prime is 20120111112077. The next prime is 20120111112139. The reversal of 20120111112122 is 22121111102102.

It is a self number, because there is not a number n which added to its sum of digits gives 20120111112122.

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, 5245073972 + ... + 5245077807.

It is an arithmetic number, because the mean of its divisors is an integer number (2171461418460).

Almost surely, 2^{20120111112122} is an apocalyptic number.

20120111112122 is a deficient number, since it is larger than the sum of its proper divisors (14623271583238).

20120111112122 is a wasteful number, since it uses less digits than its factorization.

20120111112122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10490151925.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 20120111112122 its reverse (22121111102102), we get a palindrome (42241222214224).

The spelling of 20120111112122 in words is "twenty trillion, one hundred twenty billion, one hundred eleven million, one hundred twelve thousand, one hundred twenty-two".