3221129 has 2 divisors, whose sum is σ = 3221130. Its totient is φ = 3221128.

The previous prime is 3221123. The next prime is 3221137. The reversal of 3221129 is 9211223.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1960000 + 1261129 = 1400^2 + 1123^2 .

It is a cyclic number.

It is not a de Polignac number, because 3221129 - 2⁸ = 3220873 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 3221129.

It is not a weakly prime, because it can be changed into another prime (3221123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1610564 + 1610565.

It is an arithmetic number, because the mean of its divisors is an integer number (1610565).

Almost surely, 2^3221129 is an apocalyptic number.

It is an amenable number.

3221129 is a deficient number, since it is larger than the sum of its proper divisors (1).

3221129 is an equidigital number, since it uses as much as digits as its factorization.

3221129 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 216, while the sum is 20.

The square root of 3221129 is about 1794.7504004736. The cubic root of 3221129 is about 147.6848816392.

The spelling of 3221129 in words is "three million, two hundred twenty-one thousand, one hundred twenty-nine".