23110021 has 8 divisors (see below), whose sum is σ = 26694144. Its totient is φ = 19773120.

The previous prime is 23109979. The next prime is 23110027. The reversal of 23110021 is 12001132.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 23110021 - 2⁷ = 23109893 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 (23110027) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 61605 + ... + 61978.

It is an arithmetic number, because the mean of its divisors is an integer number (3336768).

Almost surely, 2^23110021 is an apocalyptic number.

It is an amenable number.

23110021 is a deficient number, since it is larger than the sum of its proper divisors (3584123).

23110021 is a wasteful number, since it uses less digits than its factorization.

23110021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123611.

The product of its (nonzero) digits is 12, while the sum is 10.

The square root of 23110021 is about 4807.2883208728. The cubic root of 23110021 is about 284.8394335113.

Adding to 23110021 its reverse (12001132), we get a palindrome (35111153).

Subtracting from 23110021 its reverse (12001132), we obtain a square (11108889 = 3333²).

The spelling of 23110021 in words is "twenty-three million, one hundred ten thousand, twenty-one".