3345221629 has 2 divisors, whose sum is σ = 3345221630. Its totient is φ = 3345221628.

The previous prime is 3345221497. The next prime is 3345221657. The reversal of 3345221629 is 9261225433.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2401196004 + 944025625 = 49002^2 + 30725^2 .

It is an emirp because it is prime and its reverse (9261225433) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3345221629 - 2²³ = 3336833021 is a prime.

It is a super-2 number, since 2×3345221629² = 22381015494258827282, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3345227629) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1672610814 + 1672610815.

It is an arithmetic number, because the mean of its divisors is an integer number (1672610815).

Almost surely, 2^3345221629 is an apocalyptic number.

It is an amenable number.

3345221629 is a deficient number, since it is larger than the sum of its proper divisors (1).

3345221629 is an equidigital number, since it uses as much as digits as its factorization.

3345221629 is an evil number, because the sum of its binary digits is even.

The product of its digits is 77760, while the sum is 37.

The square root of 3345221629 is about 57837.8909452964. The cubic root of 3345221629 is about 1495.5753506333.

The spelling of 3345221629 in words is "three billion, three hundred forty-five million, two hundred twenty-one thousand, six hundred twenty-nine".