21010022268 has 48 divisors (see below), whose sum is σ = 49403571840. Its totient is φ = 6949240000.

The previous prime is 21010022213. The next prime is 21010022269. The reversal of 21010022268 is 86222001012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21010022269) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 797263 + ... + 823193.

It is an arithmetic number, because the mean of its divisors is an integer number (1029241080).

Almost surely, 2^21010022268 is an apocalyptic number.

It is an amenable number.

21010022268 is an abundant number, since it is smaller than the sum of its proper divisors (28393549572).

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

21010022268 is a wasteful number, since it uses less digits than its factorization.

21010022268 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26458 (or 26456 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 24.

The spelling of 21010022268 in words is "twenty-one billion, ten million, twenty-two thousand, two hundred sixty-eight".