23121303005021 has 16 divisors (see below), whose sum is σ = 25483500134400. Its totient is φ = 20842660359360.

The previous prime is 23121303005011. The next prime is 23121303005033. The reversal of 23121303005021 is 12050030312132.

It is a cyclic number.

It is not a de Polignac number, because 23121303005021 - 2⁶ = 23121303004957 is a prime.

It is a super-3 number, since 3×23121303005021³ (a number of 41 digits) contains 333 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 (23121303005011) 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, 585821 + ... + 6825378.

It is an arithmetic number, because the mean of its divisors is an integer number (1592718758400).

Almost surely, 2^{23121303005021} is an apocalyptic number.

It is an amenable number.

23121303005021 is a deficient number, since it is larger than the sum of its proper divisors (2362197129379).

23121303005021 is a wasteful number, since it uses less digits than its factorization.

23121303005021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7416836.

The product of its (nonzero) digits is 1080, while the sum is 23.

Adding to 23121303005021 its reverse (12050030312132), we get a palindrome (35171333317153).

The spelling of 23121303005021 in words is "twenty-three trillion, one hundred twenty-one billion, three hundred three million, five thousand, twenty-one".