3123996121 has 2 divisors, whose sum is σ = 3123996122. Its totient is φ = 3123996120.

The previous prime is 3123996103. The next prime is 3123996163. The reversal of 3123996121 is 1216993213.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2770969600 + 353026521 = 52640^2 + 18789^2 .

It is an emirp because it is prime and its reverse (1216993213) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3123996121 - 2⁵ = 3123996089 is a prime.

It is not a weakly prime, because it can be changed into another prime (3123996221) 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, 1561998060 + 1561998061.

It is an arithmetic number, because the mean of its divisors is an integer number (1561998061).

Almost surely, 2^3123996121 is an apocalyptic number.

It is an amenable number.

3123996121 is a deficient number, since it is larger than the sum of its proper divisors (1).

3123996121 is an equidigital number, since it uses as much as digits as its factorization.

3123996121 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 17496, while the sum is 37.

The square root of 3123996121 is about 55892.7197495345. The cubic root of 3123996121 is about 1461.8522998062.

The spelling of 3123996121 in words is "three billion, one hundred twenty-three million, nine hundred ninety-six thousand, one hundred twenty-one".