21132432311 has 2 divisors, whose sum is σ = 21132432312. Its totient is φ = 21132432310.

The previous prime is 21132432289. The next prime is 21132432313. The reversal of 21132432311 is 11323423112.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21132432311 - 2³⁴ = 3952563127 is a prime.

It is a Sophie Germain prime.

Together with 21132432313, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21132432313) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10566216155 + 10566216156.

It is an arithmetic number, because the mean of its divisors is an integer number (10566216156).

Almost surely, 2^21132432311 is an apocalyptic number.

21132432311 is a deficient number, since it is larger than the sum of its proper divisors (1).

21132432311 is an equidigital number, since it uses as much as digits as its factorization.

21132432311 is an evil number, because the sum of its binary digits is even.

The product of its digits is 864, while the sum is 23.

Adding to 21132432311 its reverse (11323423112), we get a palindrome (32455855423).

The spelling of 21132432311 in words is "twenty-one billion, one hundred thirty-two million, four hundred thirty-two thousand, three hundred eleven".