23440022121 has 4 divisors (see below), whose sum is σ = 31253362832. Its totient is φ = 15626681412.

The previous prime is 23440022071. The next prime is 23440022129. The reversal of 23440022121 is 12122004432.

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 not a de Polignac number, because 23440022121 - 2⁶ = 23440022057 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23440022129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3906670351 + ... + 3906670356.

It is an arithmetic number, because the mean of its divisors is an integer number (7813340708).

Almost surely, 2^23440022121 is an apocalyptic number.

It is an amenable number.

23440022121 is a deficient number, since it is larger than the sum of its proper divisors (7813340711).

23440022121 is an equidigital number, since it uses as much as digits as its factorization.

23440022121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7813340710.

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

Adding to 23440022121 its reverse (12122004432), we get a palindrome (35562026553).

The spelling of 23440022121 in words is "twenty-three billion, four hundred forty million, twenty-two thousand, one hundred twenty-one".