21132002323 has 2 divisors, whose sum is σ = 21132002324. Its totient is φ = 21132002322.

The previous prime is 21132002263. The next prime is 21132002347. The reversal of 21132002323 is 32320023112.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21132002323 - 2²¹ = 21129905171 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 21132002323.

It is not a weakly prime, because it can be changed into another prime (21132002393) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10566001161 + 10566001162.

It is an arithmetic number, because the mean of its divisors is an integer number (10566001162).

Almost surely, 2^21132002323 is an apocalyptic number.

21132002323 is a deficient number, since it is larger than the sum of its proper divisors (1).

21132002323 is an equidigital number, since it uses as much as digits as its factorization.

21132002323 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 19.

Adding to 21132002323 its reverse (32320023112), we get a palindrome (53452025435).

The spelling of 21132002323 in words is "twenty-one billion, one hundred thirty-two million, two thousand, three hundred twenty-three".