21330000331131 has 16 divisors (see below), whose sum is σ = 28615899603456. Its totient is φ = 14132059302816.

The previous prime is 21330000331111. The next prime is 21330000331139. The reversal of 21330000331131 is 13113300003312.

It is not a de Polignac number, because 21330000331131 - 2⁹ = 21330000330619 is a prime.

It is a super-2 number, since 2×21330000331131² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21330000331098 and 21330000331107.

It is not an unprimeable number, because it can be changed into a prime (21330000331139) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8870206 + ... + 11015468.

It is an arithmetic number, because the mean of its divisors is an integer number (1788493725216).

Almost surely, 2^{21330000331131} is an apocalyptic number.

21330000331131 is a deficient number, since it is larger than the sum of its proper divisors (7285899272325).

21330000331131 is a wasteful number, since it uses less digits than its factorization.

21330000331131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2165762.

The product of its (nonzero) digits is 486, while the sum is 21.

Adding to 21330000331131 its reverse (13113300003312), we get a palindrome (34443300334443).

The spelling of 21330000331131 in words is "twenty-one trillion, three hundred thirty billion, three hundred thirty-one thousand, one hundred thirty-one".