23001044021 has 12 divisors (see below), whose sum is σ = 24027759180. Its totient is φ = 21991999680.

The previous prime is 23001043987. The next prime is 23001044063. The reversal of 23001044021 is 12044010032.

It can be written as a sum of positive squares in 2 ways, for example, as 9334264996 + 13666779025 = 96614^2 + 116905^2 .

It is not a de Polignac number, because 23001044021 - 2³⁰ = 21927302197 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23001074021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 270281 + ... + 345041.

It is an arithmetic number, because the mean of its divisors is an integer number (2002313265).

Almost surely, 2^23001044021 is an apocalyptic number.

It is an amenable number.

23001044021 is a deficient number, since it is larger than the sum of its proper divisors (1026715159).

23001044021 is an equidigital number, since it uses as much as digits as its factorization.

23001044021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74996 (or 74893 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 17.

Adding to 23001044021 its reverse (12044010032), we get a palindrome (35045054053).

The spelling of 23001044021 in words is "twenty-three billion, one million, forty-four thousand, twenty-one".