23266221 has 16 divisors (see below), whose sum is σ = 33965568. Its totient is φ = 14049200.

The previous prime is 23266189. The next prime is 23266223. The reversal of 23266221 is 12266232.

It is not a de Polignac number, because 23266221 - 2⁵ = 23266189 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 23266191 and 23266200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23266223) 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, 9130 + ... + 11396.

It is an arithmetic number, because the mean of its divisors is an integer number (2122848).

Almost surely, 2^23266221 is an apocalyptic number.

It is an amenable number.

23266221 is a deficient number, since it is larger than the sum of its proper divisors (10699347).

23266221 is a wasteful number, since it uses less digits than its factorization.

23266221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2592.

The product of its digits is 1728, while the sum is 24.

The square root of 23266221 is about 4823.5071265626. The cubic root of 23266221 is about 285.4797337277.

The spelling of 23266221 in words is "twenty-three million, two hundred sixty-six thousand, two hundred twenty-one".