23121133023 has 4 divisors (see below), whose sum is σ = 30828177368. Its totient is φ = 15414088680.

The previous prime is 23121133001. The next prime is 23121133027. The reversal of 23121133023 is 32033112132.

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

It is not a de Polignac number, because 23121133023 - 2²⁶ = 23054024159 is a prime.

It is a super-2 number, since 2×23121133023² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23121133027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3853522168 + ... + 3853522173.

It is an arithmetic number, because the mean of its divisors is an integer number (7707044342).

Almost surely, 2^23121133023 is an apocalyptic number.

23121133023 is a deficient number, since it is larger than the sum of its proper divisors (7707044345).

23121133023 is an equidigital number, since it uses as much as digits as its factorization.

23121133023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7707044344.

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 23121133023 its reverse (32033112132), we get a palindrome (55154245155).

The spelling of 23121133023 in words is "twenty-three billion, one hundred twenty-one million, one hundred thirty-three thousand, twenty-three".