23312322221 has 8 divisors (see below), whose sum is σ = 24405146304. Its totient is φ = 22226101920.

The previous prime is 23312322211. The next prime is 23312322233. The reversal of 23312322221 is 12222321332.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23312322221 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23312322211) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1643720 + ... + 1657841.

It is an arithmetic number, because the mean of its divisors is an integer number (3050643288).

Almost surely, 2^23312322221 is an apocalyptic number.

It is an amenable number.

23312322221 is a deficient number, since it is larger than the sum of its proper divisors (1092824083).

23312322221 is a wasteful number, since it uses less digits than its factorization.

23312322221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3301891.

The product of its digits is 1728, while the sum is 23.

Adding to 23312322221 its reverse (12222321332), we get a palindrome (35534643553).

The spelling of 23312322221 in words is "twenty-three billion, three hundred twelve million, three hundred twenty-two thousand, two hundred twenty-one".