21132212290 has 32 divisors (see below), whose sum is σ = 43633624320. Its totient is φ = 7218389184.

The previous prime is 21132212273. The next prime is 21132212291. The reversal of 21132212290 is 9221223112.

It is not an unprimeable number, because it can be changed into a prime (21132212291) 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, 542302 + ... + 579961.

It is an arithmetic number, because the mean of its divisors is an integer number (1363550760).

Almost surely, 2^21132212290 is an apocalyptic number.

21132212290 is an abundant number, since it is smaller than the sum of its proper divisors (22501412030).

21132212290 is a wasteful number, since it uses less digits than its factorization.

21132212290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1122546.

The product of its (nonzero) digits is 864, while the sum is 25.

The spelling of 21132212290 in words is "twenty-one billion, one hundred thirty-two million, two hundred twelve thousand, two hundred ninety".