23123322221 has 8 divisors (see below), whose sum is σ = 24346192800. Its totient is φ = 21901037040.

The previous prime is 23123322217. The next prime is 23123322223. The reversal of 23123322221 is 12222332132.

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

It is not a de Polignac number, because 23123322221 - 2² = 23123322217 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 (23123322223) 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 7 ways as a sum of consecutive naturals, for example, 64070 + ... + 224391.

It is an arithmetic number, because the mean of its divisors is an integer number (3043274100).

Almost surely, 2^23123322221 is an apocalyptic number.

It is an amenable number.

23123322221 is a deficient number, since it is larger than the sum of its proper divisors (1222870579).

23123322221 is a wasteful number, since it uses less digits than its factorization.

23123322221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 292699.

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

Adding to 23123322221 its reverse (12222332132), we get a palindrome (35345654353).

The spelling of 23123322221 in words is "twenty-three billion, one hundred twenty-three million, three hundred twenty-two thousand, two hundred twenty-one".