23321200121 has 4 divisors (see below), whose sum is σ = 23322725712. Its totient is φ = 23319674532.

The previous prime is 23321200099. The next prime is 23321200139. The reversal of 23321200121 is 12100212332.

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 23321200121 - 2⁶ = 23321200057 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 23321200121.

It is not an unprimeable number, because it can be changed into a prime (23321200141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 739631 + ... + 770516.

It is an arithmetic number, because the mean of its divisors is an integer number (5830681428).

Almost surely, 2^23321200121 is an apocalyptic number.

It is an amenable number.

23321200121 is a deficient number, since it is larger than the sum of its proper divisors (1525591).

23321200121 is a wasteful number, since it uses less digits than its factorization.

23321200121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1525590.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 23321200121 its reverse (12100212332), we get a palindrome (35421412453).

The spelling of 23321200121 in words is "twenty-three billion, three hundred twenty-one million, two hundred thousand, one hundred twenty-one".