21313110122 has 16 divisors (see below), whose sum is σ = 33950093760. Its totient is φ = 10006339392.

The previous prime is 21313110061. The next prime is 21313110167. The reversal of 21313110122 is 22101131312.

It is a self number, because there is not a number n which added to its sum of digits gives 21313110122.

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, 2477438 + ... + 2486025.

It is an arithmetic number, because the mean of its divisors is an integer number (2121880860).

Almost surely, 2^21313110122 is an apocalyptic number.

21313110122 is a deficient number, since it is larger than the sum of its proper divisors (12636983638).

21313110122 is a wasteful number, since it uses less digits than its factorization.

21313110122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4963597.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 21313110122 its reverse (22101131312), we get a palindrome (43414241434).

The spelling of 21313110122 in words is "twenty-one billion, three hundred thirteen million, one hundred ten thousand, one hundred twenty-two".