23120323221 has 16 divisors (see below), whose sum is σ = 32648007744. Its totient is φ = 14503513344.

The previous prime is 23120323199. The next prime is 23120323277. The reversal of 23120323221 is 12232302132.

It is a happy number.

It is not a de Polignac number, because 23120323221 - 2¹⁷ = 23120192149 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23120324221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 180186 + ... + 280548.

It is an arithmetic number, because the mean of its divisors is an integer number (2040500484).

Almost surely, 2^23120323221 is an apocalyptic number.

It is an amenable number.

23120323221 is a deficient number, since it is larger than the sum of its proper divisors (9527684523).

23120323221 is a wasteful number, since it uses less digits than its factorization.

23120323221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104900.

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 23120323221 its reverse (12232302132), we get a palindrome (35352625353).

The spelling of 23120323221 in words is "twenty-three billion, one hundred twenty million, three hundred twenty-three thousand, two hundred twenty-one".