23121323321121 has 12 divisors (see below), whose sum is σ = 34474804665600. Its totient is φ = 14916982787640.

The previous prime is 23121323321111. The next prime is 23121323321143. The reversal of 23121323321121 is 12112332312132.

23121323321121 is a `hidden beast` number, since 2 + 3 + 1 + 2 + 1 + 323 + 321 + 12 + 1 = 666.

It is not a de Polignac number, because 23121323321121 - 2¹⁰ = 23121323320097 is a prime.

It is not an unprimeable number, because it can be changed into a prime (23121323321111) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 41436063021 + ... + 41436063578.

It is an arithmetic number, because the mean of its divisors is an integer number (2872900388800).

Almost surely, 2^{23121323321121} is an apocalyptic number.

It is an amenable number.

23121323321121 is a deficient number, since it is larger than the sum of its proper divisors (11353481344479).

23121323321121 is a wasteful number, since it uses less digits than its factorization.

23121323321121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82872126636 (or 82872126633 counting only the distinct ones).

The product of its digits is 2592, while the sum is 27.

Adding to 23121323321121 its reverse (12112332312132), we get a palindrome (35233655633253).

The spelling of 23121323321121 in words is "twenty-three trillion, one hundred twenty-one billion, three hundred twenty-three million, three hundred twenty-one thousand, one hundred twenty-one".