332221081 has 2 divisors, whose sum is σ = 332221082. Its totient is φ = 332221080.

The previous prime is 332221037. The next prime is 332221117. The reversal of 332221081 is 180122233.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 233814681 + 98406400 = 15291^2 + 9920^2 .

It is an emirp because it is prime and its reverse (180122233) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-332221081 is a prime.

It is a super-2 number, since 2×332221081² = 220741693321617122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (332221181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 166110540 + 166110541.

It is an arithmetic number, because the mean of its divisors is an integer number (166110541).

Almost surely, 2^332221081 is an apocalyptic number.

It is an amenable number.

332221081 is a deficient number, since it is larger than the sum of its proper divisors (1).

332221081 is an equidigital number, since it uses as much as digits as its factorization.

332221081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 332221081 is about 18226.9328467518. The cubic root of 332221081 is about 692.5892223009.

The spelling of 332221081 in words is "three hundred thirty-two million, two hundred twenty-one thousand, eighty-one".