23124000021 has 4 divisors (see below), whose sum is σ = 30832000032. Its totient is φ = 15416000012.

The previous prime is 23123999999. The next prime is 23124000071. The reversal of 23124000021 is 12000042132.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 23124000021 - 2¹³ = 23123991829 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23124000071) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3854000001 + ... + 3854000006.

It is an arithmetic number, because the mean of its divisors is an integer number (7708000008).

Almost surely, 2^23124000021 is an apocalyptic number.

It is an amenable number.

23124000021 is a deficient number, since it is larger than the sum of its proper divisors (7708000011).

23124000021 is an equidigital number, since it uses as much as digits as its factorization.

23124000021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7708000010.

The product of its (nonzero) digits is 96, while the sum is 15.

Adding to 23124000021 its reverse (12000042132), we get a palindrome (35124042153).

The spelling of 23124000021 in words is "twenty-three billion, one hundred twenty-four million, twenty-one", and thus it is an aban number.