21131000011022 has 128 divisors (see below), whose sum is σ = 37672371330048. Its totient is φ = 8790979507200.

The previous prime is 21131000011019. The next prime is 21131000011081. The reversal of 21131000011022 is 22011000013112.

It is a super-2 number, since 2×21131000011022² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21131000010988 and 21131000011006.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 768917522 + ... + 768945002.

It is an arithmetic number, because the mean of its divisors is an integer number (294315401016).

Almost surely, 2^{21131000011022} is an apocalyptic number.

21131000011022 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

21131000011022 is a deficient number, since it is larger than the sum of its proper divisors (16541371319026).

21131000011022 is a wasteful number, since it uses less digits than its factorization.

21131000011022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28234.

The product of its (nonzero) digits is 24, while the sum is 14.

Adding to 21131000011022 its reverse (22011000013112), we get a palindrome (43142000024134).

The spelling of 21131000011022 in words is "twenty-one trillion, one hundred thirty-one billion, eleven thousand, twenty-two".