23303144221021 has 16 divisors (see below), whose sum is σ = 27146106288000. Its totient is φ = 19590231241728.

The previous prime is 23303144221009. The next prime is 23303144221043. The reversal of 23303144221021 is 12012244130332.

It is not a de Polignac number, because 23303144221021 - 2⁹ = 23303144220509 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23303144221321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 64975996 + ... + 65333653.

It is an arithmetic number, because the mean of its divisors is an integer number (1696631643000).

Almost surely, 2^{23303144221021} is an apocalyptic number.

It is an amenable number.

23303144221021 is a deficient number, since it is larger than the sum of its proper divisors (3842962066979).

23303144221021 is a wasteful number, since it uses less digits than its factorization.

23303144221021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130310148.

The product of its (nonzero) digits is 6912, while the sum is 28.

Adding to 23303144221021 its reverse (12012244130332), we get a palindrome (35315388351353).

The spelling of 23303144221021 in words is "twenty-three trillion, three hundred three billion, one hundred forty-four million, two hundred twenty-one thousand, twenty-one".