21132656211 has 8 divisors (see below), whose sum is σ = 28178997184. Its totient is φ = 14087376360.

The previous prime is 21132656173. The next prime is 21132656213. The reversal of 21132656211 is 11265623112.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 21132656211 - 2⁶ = 21132656147 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21132656213) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 217585 + ... + 299346.

It is an arithmetic number, because the mean of its divisors is an integer number (3522374648).

Almost surely, 2^21132656211 is an apocalyptic number.

21132656211 is a deficient number, since it is larger than the sum of its proper divisors (7046340973).

21132656211 is a wasteful number, since it uses less digits than its factorization.

21132656211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 530561.

The product of its digits is 4320, while the sum is 30.

The spelling of 21132656211 in words is "twenty-one billion, one hundred thirty-two million, six hundred fifty-six thousand, two hundred eleven".