331201323112121 has 32 divisors (see below), whose sum is σ = 413441494050816. Its totient is φ = 257756992848000.

The previous prime is 331201323112111. The next prime is 331201323112123. The reversal of 331201323112121 is 121211323102133.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-331201323112121 is a prime.

It is not an unprimeable number, because it can be changed into a prime (331201323112123) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2557652186 + ... + 2557781676.

It is an arithmetic number, because the mean of its divisors is an integer number (12920046689088).

Almost surely, 2^{331201323112121} is an apocalyptic number.

It is an amenable number.

331201323112121 is a deficient number, since it is larger than the sum of its proper divisors (82240170938695).

331201323112121 is a wasteful number, since it uses less digits than its factorization.

331201323112121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170693.

The product of its (nonzero) digits is 1296, while the sum is 26.

Adding to 331201323112121 its reverse (121211323102133), we get a palindrome (452412646214254).

The spelling of 331201323112121 in words is "three hundred thirty-one trillion, two hundred one billion, three hundred twenty-three million, one hundred twelve thousand, one hundred twenty-one".