3221246081 has 2 divisors, whose sum is σ = 3221246082. Its totient is φ = 3221246080.

The previous prime is 3221246047. The next prime is 3221246089. The reversal of 3221246081 is 1806421223.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1947898225 + 1273347856 = 44135^2 + 35684^2 .

It is a cyclic number.

It is not a de Polignac number, because 3221246081 - 2¹⁰ = 3221245057 is a prime.

It is a super-2 number, since 2×3221246081² = 20752852628715717122, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (3221246089) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1610623040 + 1610623041.

It is an arithmetic number, because the mean of its divisors is an integer number (1610623041).

Almost surely, 2^3221246081 is an apocalyptic number.

It is an amenable number.

3221246081 is a deficient number, since it is larger than the sum of its proper divisors (1).

3221246081 is an equidigital number, since it uses as much as digits as its factorization.

3221246081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4608, while the sum is 29.

The square root of 3221246081 is about 56756.0224205326. The cubic root of 3221246081 is about 1476.8667095845.

The spelling of 3221246081 in words is "three billion, two hundred twenty-one million, two hundred forty-six thousand, eighty-one".