23021302221 has 32 divisors (see below), whose sum is σ = 34559616000. Its totient is φ = 15143706864.

The previous prime is 23021302193. The next prime is 23021302247. The reversal of 23021302221 is 12220312032.

23021302221 is a `hidden beast` number, since 230 + 213 + 0 + 2 + 221 = 666.

It is not a de Polignac number, because 23021302221 - 2⁵ = 23021302189 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 23021302194 and 23021302203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23021302021) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1919040 + ... + 1930998.

It is an arithmetic number, because the mean of its divisors is an integer number (1079988000).

Almost surely, 2^23021302221 is an apocalyptic number.

It is an amenable number.

23021302221 is a deficient number, since it is larger than the sum of its proper divisors (11538313779).

23021302221 is a wasteful number, since it uses less digits than its factorization.

23021302221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12910 (or 12904 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 23021302221 its reverse (12220312032), we get a palindrome (35241614253).

The spelling of 23021302221 in words is "twenty-three billion, twenty-one million, three hundred two thousand, two hundred twenty-one".