21112000122 has 32 divisors (see below), whose sum is σ = 43597301760. Its totient is φ = 6808566960.

The previous prime is 21112000109. The next prime is 21112000123. The reversal of 21112000122 is 22100021112.

21112000122 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 21112000098 and 21112000107.

It is not an unprimeable number, because it can be changed into a prime (21112000123) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 843829 + ... + 868487.

It is an arithmetic number, because the mean of its divisors is an integer number (1362415680).

Almost surely, 2^21112000122 is an apocalyptic number.

21112000122 is an abundant number, since it is smaller than the sum of its proper divisors (22485301638).

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

21112000122 is a wasteful number, since it uses less digits than its factorization.

21112000122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29298.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 21112000122 its reverse (22100021112), we get a palindrome (43212021234).

The spelling of 21112000122 in words is "twenty-one billion, one hundred twelve million, one hundred twenty-two", and thus it is an aban number.