20102131012 has 24 divisors (see below), whose sum is σ = 35340580352. Its totient is φ = 10004860800.

The previous prime is 20102131003. The next prime is 20102131111. The reversal of 20102131012 is 21013120102.

It is a super-2 number, since 2×20102131012² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20102130983 and 20102131001.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3497413 + ... + 3503155.

Almost surely, 2^20102131012 is an apocalyptic number.

It is an amenable number.

20102131012 is a deficient number, since it is larger than the sum of its proper divisors (15238449340).

20102131012 is a wasteful number, since it uses less digits than its factorization.

20102131012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9619 (or 9617 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 20102131012 its reverse (21013120102), we get a palindrome (41115251114).

The spelling of 20102131012 in words is "twenty billion, one hundred two million, one hundred thirty-one thousand, twelve".