23120213321 has 4 divisors (see below), whose sum is σ = 23398770192. Its totient is φ = 22841656452.

The previous prime is 23120213317. The next prime is 23120213339. The reversal of 23120213321 is 12331202132.

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 23120213321 - 2² = 23120213317 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 23120213293 and 23120213302.

It is not an unprimeable number, because it can be changed into a prime (23120213521) 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, 139278311 + ... + 139278476.

It is an arithmetic number, because the mean of its divisors is an integer number (5849692548).

Almost surely, 2^23120213321 is an apocalyptic number.

It is an amenable number.

23120213321 is a deficient number, since it is larger than the sum of its proper divisors (278556871).

23120213321 is an equidigital number, since it uses as much as digits as its factorization.

23120213321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 278556870.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 23120213321 its reverse (12331202132), we get a palindrome (35451415453).

The spelling of 23120213321 in words is "twenty-three billion, one hundred twenty million, two hundred thirteen thousand, three hundred twenty-one".