23023020130021 has 4 divisors (see below), whose sum is σ = 23023907944492. Its totient is φ = 23022132315552.

The previous prime is 23023020130009. The next prime is 23023020130081. The reversal of 23023020130021 is 12003102032032.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 15006024285121 + 8016995844900 = 3873761^2 + 2831430^2 .

It is a cyclic number.

It is not a de Polignac number, because 23023020130021 - 2¹¹ = 23023020127973 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 (23023020130081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 443868336 + ... + 443920201.

It is an arithmetic number, because the mean of its divisors is an integer number (5755976986123).

Almost surely, 2^{23023020130021} is an apocalyptic number.

It is an amenable number.

23023020130021 is a deficient number, since it is larger than the sum of its proper divisors (887814471).

23023020130021 is an equidigital number, since it uses as much as digits as its factorization.

23023020130021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 887814470.

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

Adding to 23023020130021 its reverse (12003102032032), we get a palindrome (35026122162053).

The spelling of 23023020130021 in words is "twenty-three trillion, twenty-three billion, twenty million, one hundred thirty thousand, twenty-one".