21322132331 has 2 divisors, whose sum is σ = 21322132332. Its totient is φ = 21322132330.

The previous prime is 21322132319. The next prime is 21322132379. The reversal of 21322132331 is 13323122312.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21322132331 - 2²² = 21317938027 is a prime.

It is a super-2 number, since 2×21322132331² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21322132297 and 21322132306.

It is not a weakly prime, because it can be changed into another prime (21322132831) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10661066165 + 10661066166.

It is an arithmetic number, because the mean of its divisors is an integer number (10661066166).

Almost surely, 2^21322132331 is an apocalyptic number.

21322132331 is a deficient number, since it is larger than the sum of its proper divisors (1).

21322132331 is an equidigital number, since it uses as much as digits as its factorization.

21322132331 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1296, while the sum is 23.

Adding to 21322132331 its reverse (13323122312), we get a palindrome (34645254643).

The spelling of 21322132331 in words is "twenty-one billion, three hundred twenty-two million, one hundred thirty-two thousand, three hundred thirty-one".