33390005321 has 2 divisors, whose sum is σ = 33390005322. Its totient is φ = 33390005320.

The previous prime is 33390005291. The next prime is 33390005387. The reversal of 33390005321 is 12350009333.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 30946087225 + 2443918096 = 175915^2 + 49436^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-33390005321 is a prime.

It is a super-2 number, since 2×33390005321² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (33390001321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16695002660 + 16695002661.

It is an arithmetic number, because the mean of its divisors is an integer number (16695002661).

Almost surely, 2^33390005321 is an apocalyptic number.

It is an amenable number.

33390005321 is a deficient number, since it is larger than the sum of its proper divisors (1).

33390005321 is an equidigital number, since it uses as much as digits as its factorization.

33390005321 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7290, while the sum is 29.

The spelling of 33390005321 in words is "thirty-three billion, three hundred ninety million, five thousand, three hundred twenty-one".