23200120221 has 24 divisors (see below), whose sum is σ = 32683179744. Its totient is φ = 14636587680.

The previous prime is 23200120211. The next prime is 23200120343. The reversal of 23200120221 is 12202100232.

It is a happy number.

It is not a de Polignac number, because 23200120221 - 2⁶ = 23200120157 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 23200120221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23200120211) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1014291 + ... + 1036911.

It is an arithmetic number, because the mean of its divisors is an integer number (1361799156).

Almost surely, 2^23200120221 is an apocalyptic number.

It is an amenable number.

23200120221 is a deficient number, since it is larger than the sum of its proper divisors (9483059523).

23200120221 is a wasteful number, since it uses less digits than its factorization.

23200120221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23609 (or 23590 counting only the distinct ones).

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

Adding to 23200120221 its reverse (12202100232), we get a palindrome (35402220453).

The spelling of 23200120221 in words is "twenty-three billion, two hundred million, one hundred twenty thousand, two hundred twenty-one".