3180017221 has 2 divisors, whose sum is σ = 3180017222. Its totient is φ = 3180017220.

The previous prime is 3180017179. The next prime is 3180017273. The reversal of 3180017221 is 1227100813.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3109289121 + 70728100 = 55761^2 + 8410^2 .

It is a cyclic number.

It is not a de Polignac number, because 3180017221 - 2²⁵ = 3146462789 is a prime.

It is a super-2 number, since 2×3180017221² = 20225019051713125682, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3180017921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1590008610 + 1590008611.

It is an arithmetic number, because the mean of its divisors is an integer number (1590008611).

Almost surely, 2^3180017221 is an apocalyptic number.

It is an amenable number.

3180017221 is a deficient number, since it is larger than the sum of its proper divisors (1).

3180017221 is an equidigital number, since it uses as much as digits as its factorization.

3180017221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 672, while the sum is 25.

The square root of 3180017221 is about 56391.6414107623. The cubic root of 3180017221 is about 1470.5388095317.

The spelling of 3180017221 in words is "three billion, one hundred eighty million, seventeen thousand, two hundred twenty-one".