10031211021 has 32 divisors (see below), whose sum is σ = 14582050560. Its totient is φ = 6096960000.

The previous prime is 10031211017. The next prime is 10031211061. The reversal of 10031211021 is 12011213001.

It is not a de Polignac number, because 10031211021 - 2² = 10031211017 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 10031210988 and 10031211006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10031211061) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1726321 + ... + 1732121.

It is an arithmetic number, because the mean of its divisors is an integer number (455689080).

Almost surely, 2^10031211021 is an apocalyptic number.

It is an amenable number.

10031211021 is a deficient number, since it is larger than the sum of its proper divisors (4550839539).

10031211021 is a wasteful number, since it uses less digits than its factorization.

10031211021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6357.

The product of its (nonzero) digits is 12, while the sum is 12.

Adding to 10031211021 its reverse (12011213001), we get a palindrome (22042424022).

The spelling of 10031211021 in words is "ten billion, thirty-one million, two hundred eleven thousand, twenty-one".