321012331121 has 2 divisors, whose sum is σ = 321012331122. Its totient is φ = 321012331120.

The previous prime is 321012331099. The next prime is 321012331139. The reversal of 321012331121 is 121133210123.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 310204441600 + 10807889521 = 556960^2 + 103961^2 .

It is a cyclic number.

It is not a de Polignac number, because 321012331121 - 2³⁰ = 319938589297 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 321012331093 and 321012331102.

It is not a weakly prime, because it can be changed into another prime (321012331181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160506165560 + 160506165561.

It is an arithmetic number, because the mean of its divisors is an integer number (160506165561).

Almost surely, 2^321012331121 is an apocalyptic number.

It is an amenable number.

321012331121 is a deficient number, since it is larger than the sum of its proper divisors (1).

321012331121 is an equidigital number, since it uses as much as digits as its factorization.

321012331121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 321012331121 its reverse (121133210123), we get a palindrome (442145541244).

The spelling of 321012331121 in words is "three hundred twenty-one billion, twelve million, three hundred thirty-one thousand, one hundred twenty-one".