23201203221 has 48 divisors (see below), whose sum is σ = 41458896000. Its totient is φ = 12560012928.

The previous prime is 23201203219. The next prime is 23201203231. The reversal of 23201203221 is 12230210232.

23201203221 is a `hidden beast` number, since 2 + 320 + 1 + 20 + 322 + 1 = 666.

It is not a de Polignac number, because 23201203221 - 2¹ = 23201203219 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 23201203194 and 23201203203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23201203211) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 101796 + ... + 238253.

It is an arithmetic number, because the mean of its divisors is an integer number (863727000).

Almost surely, 2^23201203221 is an apocalyptic number.

23201203221 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

23201203221 is a deficient number, since it is larger than the sum of its proper divisors (18257692779).

23201203221 is a wasteful number, since it uses less digits than its factorization.

23201203221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 340103 (or 340078 counting only the distinct ones).

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

Adding to 23201203221 its reverse (12230210232), we get a palindrome (35431413453).

The spelling of 23201203221 in words is "twenty-three billion, two hundred one million, two hundred three thousand, two hundred twenty-one".