10122235621 has 4 divisors (see below), whose sum is σ = 10195057600. Its totient is φ = 10049413644.

The previous prime is 10122235567. The next prime is 10122235649. The reversal of 10122235621 is 12653222101.

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, and also an emirpimes, since its reverse is a distinct semiprime: 12653222101 = 13 ⋅973324777.

It is a cyclic number.

It is not a de Polignac number, because 10122235621 - 2²³ = 10113847013 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10122235121) 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, 36410781 + ... + 36411058.

It is an arithmetic number, because the mean of its divisors is an integer number (2548764400).

Almost surely, 2^10122235621 is an apocalyptic number.

It is an amenable number.

10122235621 is a deficient number, since it is larger than the sum of its proper divisors (72821979).

10122235621 is an equidigital number, since it uses as much as digits as its factorization.

10122235621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72821978.

The product of its (nonzero) digits is 1440, while the sum is 25.

Adding to 10122235621 its reverse (12653222101), we get a palindrome (22775457722).

The spelling of 10122235621 in words is "ten billion, one hundred twenty-two million, two hundred thirty-five thousand, six hundred twenty-one".