23232112221 has 4 divisors (see below), whose sum is σ = 30976149632. Its totient is φ = 15488074812.

The previous prime is 23232112217. The next prime is 23232112223. The reversal of 23232112221 is 12221123232.

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 23232112221 - 2² = 23232112217 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23232112223) 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, 3872018701 + ... + 3872018706.

It is an arithmetic number, because the mean of its divisors is an integer number (7744037408).

Almost surely, 2^23232112221 is an apocalyptic number.

It is an amenable number.

23232112221 is a deficient number, since it is larger than the sum of its proper divisors (7744037411).

23232112221 is an equidigital number, since it uses as much as digits as its factorization.

23232112221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7744037410.

The product of its digits is 576, while the sum is 21.

Adding to 23232112221 its reverse (12221123232), we get a palindrome (35453235453).

The spelling of 23232112221 in words is "twenty-three billion, two hundred thirty-two million, one hundred twelve thousand, two hundred twenty-one".