21332333131 has 2 divisors, whose sum is σ = 21332333132. Its totient is φ = 21332333130.

The previous prime is 21332333123. The next prime is 21332333161. The reversal of 21332333131 is 13133323312.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21332333131 - 2³ = 21332333123 is a prime.

It is a super-2 number, since 2×21332333131² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21332333096 and 21332333105.

It is not a weakly prime, because it can be changed into another prime (21332333101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10666166565 + 10666166566.

It is an arithmetic number, because the mean of its divisors is an integer number (10666166566).

Almost surely, 2^21332333131 is an apocalyptic number.

21332333131 is a deficient number, since it is larger than the sum of its proper divisors (1).

21332333131 is an equidigital number, since it uses as much as digits as its factorization.

21332333131 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2916, while the sum is 25.

Adding to 21332333131 its reverse (13133323312), we get a palindrome (34465656443).

The spelling of 21332333131 in words is "twenty-one billion, three hundred thirty-two million, three hundred thirty-three thousand, one hundred thirty-one".