23121021314421 has 24 divisors (see below), whose sum is σ = 34553810898360. Its totient is φ = 14880274416000.

The previous prime is 23121021314383. The next prime is 23121021314437. The reversal of 23121021314421 is 12441312012132.

23121021314421 is a `hidden beast` number, since 2 + 3 + 1 + 2 + 1 + 0 + 213 + 1 + 442 + 1 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 4475128702500 + 18645892611921 = 2115450^2 + 4318089^2 .

It is not a de Polignac number, because 23121021314421 - 2⁶ = 23121021314357 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23121021304421) 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 23 ways as a sum of consecutive naturals, for example, 4860970 + ... + 8358891.

It is an arithmetic number, because the mean of its divisors is an integer number (1439742120765).

Almost surely, 2^{23121021314421} is an apocalyptic number.

It is an amenable number.

23121021314421 is a deficient number, since it is larger than the sum of its proper divisors (11432789583939).

23121021314421 is a wasteful number, since it uses less digits than its factorization.

23121021314421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13226597 (or 13226594 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

Adding to 23121021314421 its reverse (12441312012132), we get a palindrome (35562333326553).

The spelling of 23121021314421 in words is "twenty-three trillion, one hundred twenty-one billion, twenty-one million, three hundred fourteen thousand, four hundred twenty-one".