10212310021 has 4 divisors (see below), whose sum is σ = 10213415200. Its totient is φ = 10211204844.

The previous prime is 10212310007. The next prime is 10212310027. The reversal of 10212310021 is 12001321201.

10212310021 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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 10212310021 - 2³¹ = 8064826373 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10212309983 and 10212310010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10212310027) 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, 538611 + ... + 557248.

It is an arithmetic number, because the mean of its divisors is an integer number (2553353800).

Almost surely, 2^10212310021 is an apocalyptic number.

It is an amenable number.

10212310021 is a deficient number, since it is larger than the sum of its proper divisors (1105179).

10212310021 is an equidigital number, since it uses as much as digits as its factorization.

10212310021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1105178.

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

Adding to 10212310021 its reverse (12001321201), we get a palindrome (22213631222).

The spelling of 10212310021 in words is "ten billion, two hundred twelve million, three hundred ten thousand, twenty-one".