3422208721 has 2 divisors, whose sum is σ = 3422208722. Its totient is φ = 3422208720.

The previous prime is 3422208719. The next prime is 3422208737. The reversal of 3422208721 is 1278022243.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3321908496 + 100300225 = 57636^2 + 10015^2 .

It is a cyclic number.

It is not a de Polignac number, because 3422208721 - 2¹ = 3422208719 is a prime.

Together with 3422208719, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (3422208701) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1711104360 + 1711104361.

It is an arithmetic number, because the mean of its divisors is an integer number (1711104361).

Almost surely, 2^3422208721 is an apocalyptic number.

It is an amenable number.

3422208721 is a deficient number, since it is larger than the sum of its proper divisors (1).

3422208721 is an equidigital number, since it uses as much as digits as its factorization.

3422208721 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10752, while the sum is 31.

The square root of 3422208721 is about 58499.6471869703. The cubic root of 3422208721 is about 1506.9615260478.

The spelling of 3422208721 in words is "three billion, four hundred twenty-two million, two hundred eight thousand, seven hundred twenty-one".