321361121 has 2 divisors, whose sum is σ = 321361122. Its totient is φ = 321361120.

The previous prime is 321361087. The next prime is 321361163. The reversal of 321361121 is 121163123.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 245862400 + 75498721 = 15680^2 + 8689^2 .

It is a cyclic number.

It is not a de Polignac number, because 321361121 - 2⁶ = 321361057 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 321361093 and 321361102.

It is not a weakly prime, because it can be changed into another prime (321361921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160680560 + 160680561.

It is an arithmetic number, because the mean of its divisors is an integer number (160680561).

Almost surely, 2^321361121 is an apocalyptic number.

It is an amenable number.

321361121 is a deficient number, since it is larger than the sum of its proper divisors (1).

321361121 is an equidigital number, since it uses as much as digits as its factorization.

321361121 is an evil number, because the sum of its binary digits is even.

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

The square root of 321361121 is about 17926.5479387416. The cubic root of 321361121 is about 684.9587919871.

The spelling of 321361121 in words is "three hundred twenty-one million, three hundred sixty-one thousand, one hundred twenty-one".