20330021131 has 16 divisors (see below), whose sum is σ = 23422341888. Its totient is φ = 17284831200.

The previous prime is 20330021099. The next prime is 20330021137. The reversal of 20330021131 is 13112003302.

It is not a de Polignac number, because 20330021131 - 2⁵ = 20330021099 is a prime.

It is a super-2 number, since 2×20330021131² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20330021137) 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, 2950216 + ... + 2957098.

It is an arithmetic number, because the mean of its divisors is an integer number (1463896368).

Almost surely, 2^20330021131 is an apocalyptic number.

20330021131 is a deficient number, since it is larger than the sum of its proper divisors (3092320757).

20330021131 is a wasteful number, since it uses less digits than its factorization.

20330021131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10242.

The product of its (nonzero) digits is 108, while the sum is 16.

Adding to 20330021131 its reverse (13112003302), we get a palindrome (33442024433).

The spelling of 20330021131 in words is "twenty billion, three hundred thirty million, twenty-one thousand, one hundred thirty-one".