21132210986 has 16 divisors (see below), whose sum is σ = 33700593024. Its totient is φ = 9916015824.

The previous prime is 21132210977. The next prime is 21132211073. The reversal of 21132210986 is 68901223112.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4331486 + ... + 4336361.

It is an arithmetic number, because the mean of its divisors is an integer number (2106287064).

Almost surely, 2^21132210986 is an apocalyptic number.

21132210986 is a deficient number, since it is larger than the sum of its proper divisors (12568382038).

21132210986 is a wasteful number, since it uses less digits than its factorization.

21132210986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8667925.

The product of its (nonzero) digits is 10368, while the sum is 35.

The spelling of 21132210986 in words is "twenty-one billion, one hundred thirty-two million, two hundred ten thousand, nine hundred eighty-six".