23122621 has 6 divisors (see below), whose sum is σ = 23893566. Its totient is φ = 22375800.

The previous prime is 23122609. The next prime is 23122709. The reversal of 23122621 is 12622132.

It can be written as a sum of positive squares in only one way, i.e., 23088025 + 34596 = 4805^2 + 186^2 .

It is not a de Polignac number, because 23122621 - 2⁷ = 23122493 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 (23122921) 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 5 ways as a sum of consecutive naturals, for example, 11070 + ... + 12991.

It is an arithmetic number, because the mean of its divisors is an integer number (3982261).

Almost surely, 2^23122621 is an apocalyptic number.

It is an amenable number.

23122621 is a deficient number, since it is larger than the sum of its proper divisors (770945).

23122621 is an equidigital number, since it uses as much as digits as its factorization.

23122621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24123 (or 24092 counting only the distinct ones).

The product of its digits is 288, while the sum is 19.

The square root of 23122621 is about 4808.5986524142. The cubic root of 23122621 is about 284.8911906373.

Adding to 23122621 its reverse (12622132), we get a palindrome (35744753).

The spelling of 23122621 in words is "twenty-three million, one hundred twenty-two thousand, six hundred twenty-one".