23213323121 has 4 divisors (see below), whose sum is σ = 23263460352. Its totient is φ = 23163185892.

The previous prime is 23213323117. The next prime is 23213323127. The reversal of 23213323121 is 12132331232.

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 23213323121 - 2² = 23213323117 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23213323127) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25067921 + ... + 25068846.

It is an arithmetic number, because the mean of its divisors is an integer number (5815865088).

Almost surely, 2^23213323121 is an apocalyptic number.

It is an amenable number.

23213323121 is a deficient number, since it is larger than the sum of its proper divisors (50137231).

23213323121 is an equidigital number, since it uses as much as digits as its factorization.

23213323121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50137230.

The product of its digits is 1296, while the sum is 23.

Adding to 23213323121 its reverse (12132331232), we get a palindrome (35345654353).

The spelling of 23213323121 in words is "twenty-three billion, two hundred thirteen million, three hundred twenty-three thousand, one hundred twenty-one".