21032321223131 has 2 divisors, whose sum is σ = 21032321223132. Its totient is φ = 21032321223130.

The previous prime is 21032321223083. The next prime is 21032321223191. The reversal of 21032321223131 is 13132212323012.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21032321223131 is a prime.

It is a super-2 number, since 2×21032321223131² (a number of 27 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 21032321223131.

It is not a weakly prime, because it can be changed into another prime (21032321223191) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10516160611565 + 10516160611566.

It is an arithmetic number, because the mean of its divisors is an integer number (10516160611566).

Almost surely, 2^{21032321223131} is an apocalyptic number.

21032321223131 is a deficient number, since it is larger than the sum of its proper divisors (1).

21032321223131 is an equidigital number, since it uses as much as digits as its factorization.

21032321223131 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2592, while the sum is 26.

Adding to 21032321223131 its reverse (13132212323012), we get a palindrome (34164533546143).

The spelling of 21032321223131 in words is "twenty-one trillion, thirty-two billion, three hundred twenty-one million, two hundred twenty-three thousand, one hundred thirty-one".