3311221997 has 2 divisors, whose sum is σ = 3311221998. Its totient is φ = 3311221996.

The previous prime is 3311221961. The next prime is 3311222023. The reversal of 3311221997 is 7991221133.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2104423876 + 1206798121 = 45874^2 + 34739^2 .

It is a cyclic number.

It is not a de Polignac number, because 3311221997 - 2¹⁰ = 3311220973 is a prime.

It is a super-2 number, since 2×3311221997² = 21928382226833336018, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 3311221997.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3311221097) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1655610998 + 1655610999.

It is an arithmetic number, because the mean of its divisors is an integer number (1655610999).

Almost surely, 2^3311221997 is an apocalyptic number.

It is an amenable number.

3311221997 is a deficient number, since it is larger than the sum of its proper divisors (1).

3311221997 is an equidigital number, since it uses as much as digits as its factorization.

3311221997 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 20412, while the sum is 38.

The square root of 3311221997 is about 57543.2185144349. The cubic root of 3311221997 is about 1490.4912568685.

The spelling of 3311221997 in words is "three billion, three hundred eleven million, two hundred twenty-one thousand, nine hundred ninety-seven".