3121420199 has 2 divisors, whose sum is σ = 3121420200. Its totient is φ = 3121420198.

The previous prime is 3121420151. The next prime is 3121420219. The reversal of 3121420199 is 9910241213.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3121420199 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3121420129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1560710099 + 1560710100.

It is an arithmetic number, because the mean of its divisors is an integer number (1560710100).

Almost surely, 2^3121420199 is an apocalyptic number.

3121420199 is a deficient number, since it is larger than the sum of its proper divisors (1).

3121420199 is an equidigital number, since it uses as much as digits as its factorization.

3121420199 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3888, while the sum is 32.

The square root of 3121420199 is about 55869.6715490614. The cubic root of 3121420199 is about 1461.4503943812.

The spelling of 3121420199 in words is "three billion, one hundred twenty-one million, four hundred twenty thousand, one hundred ninety-nine".