23220102221 has 4 divisors (see below), whose sum is σ = 23238201792. Its totient is φ = 23202002652.

The previous prime is 23220102181. The next prime is 23220102253. The reversal of 23220102221 is 12220102232.

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 23220102221 - 2²² = 23215907917 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 23220102221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23220102281) 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, 9047861 + ... + 9050426.

It is an arithmetic number, because the mean of its divisors is an integer number (5809550448).

Almost surely, 2^23220102221 is an apocalyptic number.

It is an amenable number.

23220102221 is a deficient number, since it is larger than the sum of its proper divisors (18099571).

23220102221 is a wasteful number, since it uses less digits than its factorization.

23220102221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18099570.

The product of its (nonzero) digits is 192, while the sum is 17.

Adding to 23220102221 its reverse (12220102232), we get a palindrome (35440204453).

The spelling of 23220102221 in words is "twenty-three billion, two hundred twenty million, one hundred two thousand, two hundred twenty-one".