20112111112122 has 48 divisors (see below), whose sum is σ = 43907377138560. Its totient is φ = 6653179116000.

The previous prime is 20112111112111. The next prime is 20112111112139. The reversal of 20112111112122 is 22121111121102.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 20112111112095 and 20112111112104.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 786297 + ... + 6390812.

It is an arithmetic number, because the mean of its divisors is an integer number (914737023720).

Almost surely, 2^{20112111112122} is an apocalyptic number.

20112111112122 is an abundant number, since it is smaller than the sum of its proper divisors (23795266026438).

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

20112111112122 is a wasteful number, since it uses less digits than its factorization.

20112111112122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7178299 (or 7178296 counting only the distinct ones).

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

Adding to 20112111112122 its reverse (22121111121102), we get a palindrome (42233222233224).

The spelling of 20112111112122 in words is "twenty trillion, one hundred twelve billion, one hundred eleven million, one hundred twelve thousand, one hundred twenty-two".