21310021122 has 32 divisors (see below), whose sum is σ = 45941622720. Its totient is φ = 6550770240.

The previous prime is 21310021093. The next prime is 21310021123. The reversal of 21310021122 is 22112001312.

It is a super-2 number, since 2×21310021122² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (21310021123) 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, 44404 + ... + 211167.

It is an arithmetic number, because the mean of its divisors is an integer number (1435675710).

Almost surely, 2^21310021122 is an apocalyptic number.

21310021122 is an abundant number, since it is smaller than the sum of its proper divisors (24631601598).

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

21310021122 is a wasteful number, since it uses less digits than its factorization.

21310021122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 256658.

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 21310021122 its reverse (22112001312), we get a palindrome (43422022434).

The spelling of 21310021122 in words is "twenty-one billion, three hundred ten million, twenty-one thousand, one hundred twenty-two".