23220422121 has 32 divisors (see below), whose sum is σ = 33491219328. Its totient is φ = 14225748480.

The previous prime is 23220422081. The next prime is 23220422227. The reversal of 23220422121 is 12122402232.

It is not a de Polignac number, because 23220422121 - 2¹³ = 23220413929 is a prime.

It is a super-2 number, since 2×23220422121² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (23220422921) 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, 13491541 + ... + 13493261.

It is an arithmetic number, because the mean of its divisors is an integer number (1046600604).

Almost surely, 2^23220422121 is an apocalyptic number.

It is an amenable number.

23220422121 is a deficient number, since it is larger than the sum of its proper divisors (10270797207).

23220422121 is a wasteful number, since it uses less digits than its factorization.

23220422121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3081.

The product of its (nonzero) digits is 768, while the sum is 21.

Adding to 23220422121 its reverse (12122402232), we get a palindrome (35342824353).

The spelling of 23220422121 in words is "twenty-three billion, two hundred twenty million, four hundred twenty-two thousand, one hundred twenty-one".