10212313021 has 4 divisors (see below), whose sum is σ = 10749803200. Its totient is φ = 9674822844.

The previous prime is 10212312991. The next prime is 10212313093. The reversal of 10212313021 is 12031321201.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 10212313021 - 2⁵ = 10212312989 is a prime.

It is a super-2 number, since 2×10212313021² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10212312986 and 10212313004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10212313121) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 268745061 + ... + 268745098.

It is an arithmetic number, because the mean of its divisors is an integer number (2687450800).

Almost surely, 2^10212313021 is an apocalyptic number.

It is an amenable number.

10212313021 is a deficient number, since it is larger than the sum of its proper divisors (537490179).

10212313021 is an equidigital number, since it uses as much as digits as its factorization.

10212313021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 537490178.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 10212313021 its reverse (12031321201), we get a palindrome (22243634222).

The spelling of 10212313021 in words is "ten billion, two hundred twelve million, three hundred thirteen thousand, twenty-one".