21122101122 has 64 divisors (see below), whose sum is σ = 43953186816. Its totient is φ = 6761905920.

The previous prime is 21122101109. The next prime is 21122101199. The reversal of 21122101122 is 22110122112.

It is a super-2 number, since 2×21122101122² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7930363 + ... + 7933025.

It is an arithmetic number, because the mean of its divisors is an integer number (686768544).

Almost surely, 2^21122101122 is an apocalyptic number.

21122101122 is an abundant number, since it is smaller than the sum of its proper divisors (22831085694).

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

21122101122 is a wasteful number, since it uses less digits than its factorization.

21122101122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3215.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 21122101122 its reverse (22110122112), we get a palindrome (43232223234).

The spelling of 21122101122 in words is "twenty-one billion, one hundred twenty-two million, one hundred one thousand, one hundred twenty-two".