10102331021 has 4 divisors (see below), whose sum is σ = 10160726172. Its totient is φ = 10043935872.

The previous prime is 10102330981. The next prime is 10102331053. The reversal of 10102331021 is 12013320101.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 6199830121 + 3902500900 = 78739^2 + 62470^2 .

It is a cyclic number.

It is not a de Polignac number, because 10102331021 - 2⁶ = 10102330957 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10102330987 and 10102331005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10102361021) 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, 29197316 + ... + 29197661.

It is an arithmetic number, because the mean of its divisors is an integer number (2540181543).

Almost surely, 2^10102331021 is an apocalyptic number.

It is an amenable number.

10102331021 is a deficient number, since it is larger than the sum of its proper divisors (58395151).

10102331021 is an equidigital number, since it uses as much as digits as its factorization.

10102331021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58395150.

The product of its (nonzero) digits is 36, while the sum is 14.

Adding to 10102331021 its reverse (12013320101), we get a palindrome (22115651122).

The spelling of 10102331021 in words is "ten billion, one hundred two million, three hundred thirty-one thousand, twenty-one".