21132130337 has 2 divisors, whose sum is σ = 21132130338. Its totient is φ = 21132130336.

The previous prime is 21132130307. The next prime is 21132130343. The reversal of 21132130337 is 73303123112.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12142056481 + 8990073856 = 110191^2 + 94816^2 .

It is a cyclic number.

It is not a de Polignac number, because 21132130337 - 2⁸ = 21132130081 is a prime.

It is not a weakly prime, because it can be changed into another prime (21132130307) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10566065168 + 10566065169.

It is an arithmetic number, because the mean of its divisors is an integer number (10566065169).

Almost surely, 2^21132130337 is an apocalyptic number.

It is an amenable number.

21132130337 is a deficient number, since it is larger than the sum of its proper divisors (1).

21132130337 is an equidigital number, since it uses as much as digits as its factorization.

21132130337 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2268, while the sum is 26.

Adding to 21132130337 its reverse (73303123112), we get a palindrome (94435253449).

The spelling of 21132130337 in words is "twenty-one billion, one hundred thirty-two million, one hundred thirty thousand, three hundred thirty-seven".