121232012131321 has 24 divisors (see below), whose sum is σ = 150067707198720. Its totient is φ = 95894739997056.

The previous prime is 121232012131309. The next prime is 121232012131331. The reversal of 121232012131321 is 123131210232121.

It is a de Polignac number, because none of the positive numbers 2^k-121232012131321 is a prime.

It is a super-2 number, since 2×121232012131321² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121232012131331) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8880276 + ... + 17925493.

It is an arithmetic number, because the mean of its divisors is an integer number (6252821133280).

Almost surely, 2^{121232012131321} is an apocalyptic number.

It is an amenable number.

121232012131321 is a deficient number, since it is larger than the sum of its proper divisors (28835695067399).

121232012131321 is a wasteful number, since it uses less digits than its factorization.

121232012131321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26809625 (or 26809612 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 25.

Adding to 121232012131321 its reverse (123131210232121), we get a palindrome (244363222363442).

The spelling of 121232012131321 in words is "one hundred twenty-one trillion, two hundred thirty-two billion, twelve million, one hundred thirty-one thousand, three hundred twenty-one".