10102013021 has 4 divisors (see below), whose sum is σ = 10110274272. Its totient is φ = 10093751772.

The previous prime is 10102013017. The next prime is 10102013063. The reversal of 10102013021 is 12031020101.

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 10102013021 - 2² = 10102013017 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10102012993 and 10102013011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10102313021) 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, 4128791 + ... + 4131236.

It is an arithmetic number, because the mean of its divisors is an integer number (2527568568).

Almost surely, 2^10102013021 is an apocalyptic number.

It is an amenable number.

10102013021 is a deficient number, since it is larger than the sum of its proper divisors (8261251).

10102013021 is an equidigital number, since it uses as much as digits as its factorization.

10102013021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8261250.

The product of its (nonzero) digits is 12, while the sum is 11.

Adding to 10102013021 its reverse (12031020101), we get a palindrome (22133033122).

The spelling of 10102013021 in words is "ten billion, one hundred two million, thirteen thousand, twenty-one".