3421221017 has 2 divisors, whose sum is σ = 3421221018. Its totient is φ = 3421221016.

The previous prime is 3421221007. The next prime is 3421221019. The reversal of 3421221017 is 7101221243.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3385028761 + 36192256 = 58181^2 + 6016^2 .

It is a cyclic number.

It is not a de Polignac number, because 3421221017 - 2⁶ = 3421220953 is a prime.

Together with 3421221019, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 3421220983 and 3421221001.

It is not a weakly prime, because it can be changed into another prime (3421221019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1710610508 + 1710610509.

It is an arithmetic number, because the mean of its divisors is an integer number (1710610509).

Almost surely, 2^3421221017 is an apocalyptic number.

It is an amenable number.

3421221017 is a deficient number, since it is larger than the sum of its proper divisors (1).

3421221017 is an equidigital number, since it uses as much as digits as its factorization.

3421221017 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 672, while the sum is 23.

The square root of 3421221017 is about 58491.2046123176. The cubic root of 3421221017 is about 1506.8165343902.

The spelling of 3421221017 in words is "three billion, four hundred twenty-one million, two hundred twenty-one thousand, seventeen".