21522662026 has 16 divisors (see below), whose sum is σ = 32344329600. Its totient is φ = 10741238928.

The previous prime is 21522662017. The next prime is 21522662027. The reversal of 21522662026 is 62026622512.

It is a junction number, because it is equal to n+sod(n) for n = 21522661982 and 21522662000.

It is not an unprimeable number, because it can be changed into a prime (21522662027) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2832240 + ... + 2839828.

It is an arithmetic number, because the mean of its divisors is an integer number (2021520600).

Almost surely, 2^21522662026 is an apocalyptic number.

21522662026 is a deficient number, since it is larger than the sum of its proper divisors (10821667574).

21522662026 is a wasteful number, since it uses less digits than its factorization.

21522662026 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10053.

The product of its (nonzero) digits is 34560, while the sum is 34.

The spelling of 21522662026 in words is "twenty-one billion, five hundred twenty-two million, six hundred sixty-two thousand, twenty-six".