3322813721 has 2 divisors, whose sum is σ = 3322813722. Its totient is φ = 3322813720.

The previous prime is 3322813633. The next prime is 3322813723. The reversal of 3322813721 is 1273182233.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3275959696 + 46854025 = 57236^2 + 6845^2 .

It is a cyclic number.

It is not a de Polignac number, because 3322813721 - 2¹⁸ = 3322551577 is a prime.

It is a super-2 number, since 2×3322813721² = 22082182048931731682, which contains 22 as substring.

Together with 3322813723, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (3322813723) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1661406860 + 1661406861.

It is an arithmetic number, because the mean of its divisors is an integer number (1661406861).

Almost surely, 2^3322813721 is an apocalyptic number.

It is an amenable number.

3322813721 is a deficient number, since it is larger than the sum of its proper divisors (1).

3322813721 is an equidigital number, since it uses as much as digits as its factorization.

3322813721 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12096, while the sum is 32.

The square root of 3322813721 is about 57643.8524128983. The cubic root of 3322813721 is about 1492.2285048522.

Adding to 3322813721 its reverse (1273182233), we get a palindrome (4595995954).

The spelling of 3322813721 in words is "three billion, three hundred twenty-two million, eight hundred thirteen thousand, seven hundred twenty-one".