21246622210 has 32 divisors (see below), whose sum is σ = 43066473984. Its totient is φ = 7476816000.

The previous prime is 21246622181. The next prime is 21246622231. The reversal of 21246622210 is 1222664212.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3111931 + ... + 3118750.

It is an arithmetic number, because the mean of its divisors is an integer number (1345827312).

Almost surely, 2^21246622210 is an apocalyptic number.

21246622210 is an abundant number, since it is smaller than the sum of its proper divisors (21819851774).

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

21246622210 is a wasteful number, since it uses less digits than its factorization.

21246622210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6230730.

The product of its (nonzero) digits is 4608, while the sum is 28.

The spelling of 21246622210 in words is "twenty-one billion, two hundred forty-six million, six hundred twenty-two thousand, two hundred ten".