23022100221 has 4 divisors (see below), whose sum is σ = 30696133632. Its totient is φ = 15348066812.

The previous prime is 23022100093. The next prime is 23022100229. The reversal of 23022100221 is 12200122032.

It is a happy number.

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 23022100221 - 2⁷ = 23022100093 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 23022100221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23022100229) 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, 3837016701 + ... + 3837016706.

It is an arithmetic number, because the mean of its divisors is an integer number (7674033408).

Almost surely, 2^23022100221 is an apocalyptic number.

It is an amenable number.

23022100221 is a deficient number, since it is larger than the sum of its proper divisors (7674033411).

23022100221 is an equidigital number, since it uses as much as digits as its factorization.

23022100221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7674033410.

The product of its (nonzero) digits is 96, while the sum is 15.

Adding to 23022100221 its reverse (12200122032), we get a palindrome (35222222253).

The spelling of 23022100221 in words is "twenty-three billion, twenty-two million, one hundred thousand, two hundred twenty-one".