23130223021 has 16 divisors (see below), whose sum is σ = 24954330240. Its totient is φ = 21367342080.

The previous prime is 23130222991. The next prime is 23130223027. The reversal of 23130223021 is 12032203132.

It is a cyclic number.

It is not a de Polignac number, because 23130223021 - 2⁷ = 23130222893 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 23130223021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23130223027) 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, 1764136 + ... + 1777198.

It is an arithmetic number, because the mean of its divisors is an integer number (1559645640).

Almost surely, 2^23130223021 is an apocalyptic number.

It is an amenable number.

23130223021 is a deficient number, since it is larger than the sum of its proper divisors (1824107219).

23130223021 is a wasteful number, since it uses less digits than its factorization.

23130223021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15396.

The product of its (nonzero) digits is 432, while the sum is 19.

Adding to 23130223021 its reverse (12032203132), we get a palindrome (35162426153).

The spelling of 23130223021 in words is "twenty-three billion, one hundred thirty million, two hundred twenty-three thousand, twenty-one".