23110221 has 16 divisors (see below), whose sum is σ = 32552960. Its totient is φ = 14560560.

The previous prime is 23110201. The next prime is 23110223. The reversal of 23110221 is 12201132.

It is not a de Polignac number, because 23110221 - 2¹³ = 23102029 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 23110197 and 23110206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23110223) 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, 1110 + ... + 6888.

It is an arithmetic number, because the mean of its divisors is an integer number (2034560).

Almost surely, 2^23110221 is an apocalyptic number.

It is an amenable number.

23110221 is a deficient number, since it is larger than the sum of its proper divisors (9442739).

23110221 is a wasteful number, since it uses less digits than its factorization.

23110221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5856.

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 23110221 is about 4807.3091225757. The cubic root of 23110221 is about 284.8402551999.

Adding to 23110221 its reverse (12201132), we get a palindrome (35311353).

The spelling of 23110221 in words is "twenty-three million, one hundred ten thousand, two hundred twenty-one".