3313020331921 has 2 divisors, whose sum is σ = 3313020331922. Its totient is φ = 3313020331920.

The previous prime is 3313020331853. The next prime is 3313020331937. The reversal of 3313020331921 is 1291330203133.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3212927191296 + 100093140625 = 1792464^2 + 316375^2 .

It is a cyclic number.

It is not a de Polignac number, because 3313020331921 - 2³³ = 3304430397329 is a prime.

It is a super-2 number, since 2×3313020331921² (a number of 26 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (3313020331121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1656510165960 + 1656510165961.

It is an arithmetic number, because the mean of its divisors is an integer number (1656510165961).

Almost surely, 2^{3313020331921} is an apocalyptic number.

It is an amenable number.

3313020331921 is a deficient number, since it is larger than the sum of its proper divisors (1).

3313020331921 is an equidigital number, since it uses as much as digits as its factorization.

3313020331921 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8748, while the sum is 31.

The spelling of 3313020331921 in words is "three trillion, three hundred thirteen billion, twenty million, three hundred thirty-one thousand, nine hundred twenty-one".