3821322217 has 2 divisors, whose sum is σ = 3821322218. Its totient is φ = 3821322216.

The previous prime is 3821322209. The next prime is 3821322227. The reversal of 3821322217 is 7122231283.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3612490816 + 208831401 = 60104^2 + 14451^2 .

It is a cyclic number.

It is not a de Polignac number, because 3821322217 - 2³ = 3821322209 is a prime.

It is a super-2 number, since 2×3821322217² = 29205006972275590178, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (3821322227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1910661108 + 1910661109.

It is an arithmetic number, because the mean of its divisors is an integer number (1910661109).

Almost surely, 2^3821322217 is an apocalyptic number.

It is an amenable number.

3821322217 is a deficient number, since it is larger than the sum of its proper divisors (1).

3821322217 is an equidigital number, since it uses as much as digits as its factorization.

3821322217 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8064, while the sum is 31.

The square root of 3821322217 is about 61816.8441203528. The cubic root of 3821322217 is about 1563.4040035712.

The spelling of 3821322217 in words is "three billion, eight hundred twenty-one million, three hundred twenty-two thousand, two hundred seventeen".