21102011022 has 16 divisors (see below), whose sum is σ = 44686611792. Its totient is φ = 6620238720.

The previous prime is 21102011017. The next prime is 21102011053. The reversal of 21102011022 is 22011020112.

It is a junction number, because it is equal to n+sod(n) for n = 21102010989 and 21102011007.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 103441129 + ... + 103441332.

It is an arithmetic number, because the mean of its divisors is an integer number (2792913237).

Almost surely, 2^21102011022 is an apocalyptic number.

21102011022 is an abundant number, since it is smaller than the sum of its proper divisors (23584600770).

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

21102011022 is a wasteful number, since it uses less digits than its factorization.

21102011022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 206882483.

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

Adding to 21102011022 its reverse (22011020112), we get a palindrome (43113031134).

The spelling of 21102011022 in words is "twenty-one billion, one hundred two million, eleven thousand, twenty-two".