21226652882 has 18 divisors (see below), whose sum is σ = 32317018167. Its totient is φ = 10456631500.

The previous prime is 21226652791. The next prime is 21226652903. The reversal of 21226652882 is 28825662212.

It can be written as a sum of positive squares in only one way, i.e., 10613326441 + 10613326441 = 103021^2 + 103021^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=103021.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 14628257 + ... + 14629707.

Almost surely, 2^21226652882 is an apocalyptic number.

21226652882 is a deficient number, since it is larger than the sum of its proper divisors (11090365285).

21226652882 is an frugal number, since it uses more digits than its factorization.

21226652882 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3046 (or 1524 counting only the distinct ones).

The product of its digits is 368640, while the sum is 44.

The spelling of 21226652882 in words is "twenty-one billion, two hundred twenty-six million, six hundred fifty-two thousand, eight hundred eighty-two".