23065221 has 16 divisors (see below), whose sum is σ = 32667840. Its totient is φ = 14434560.

The previous prime is 23065199. The next prime is 23065223. The reversal of 23065221 is 12256032.

It is not a de Polignac number, because 23065221 - 2⁷ = 23065093 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23065223) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4651 + ... + 8231.

It is an arithmetic number, because the mean of its divisors is an integer number (2041740).

Almost surely, 2^23065221 is an apocalyptic number.

It is an amenable number.

23065221 is a deficient number, since it is larger than the sum of its proper divisors (9602619).

23065221 is a wasteful number, since it uses less digits than its factorization.

23065221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3716.

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 23065221 is about 4802.6264689230. The cubic root of 23065221 is about 284.6552556699.

The spelling of 23065221 in words is "twenty-three million, sixty-five thousand, two hundred twenty-one".