21332131033 has 2 divisors, whose sum is σ = 21332131034. Its totient is φ = 21332131032.

The previous prime is 21332131031. The next prime is 21332131049. The reversal of 21332131033 is 33013123312.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11987622144 + 9344508889 = 109488^2 + 96667^2 .

It is a cyclic number.

It is not a de Polignac number, because 21332131033 - 2¹ = 21332131031 is a prime.

Together with 21332131031, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 21332130995 and 21332131013.

It is not a weakly prime, because it can be changed into another prime (21332131031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10666065516 + 10666065517.

It is an arithmetic number, because the mean of its divisors is an integer number (10666065517).

Almost surely, 2^21332131033 is an apocalyptic number.

It is an amenable number.

21332131033 is a deficient number, since it is larger than the sum of its proper divisors (1).

21332131033 is an equidigital number, since it uses as much as digits as its factorization.

21332131033 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 972, while the sum is 22.

Adding to 21332131033 its reverse (33013123312), we get a palindrome (54345254345).

The spelling of 21332131033 in words is "twenty-one billion, three hundred thirty-two million, one hundred thirty-one thousand, thirty-three".