3122111989 has 2 divisors, whose sum is σ = 3122111990. Its totient is φ = 3122111988.

The previous prime is 3122111983. The next prime is 3122112013. The reversal of 3122111989 is 9891112213.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3118328964 + 3783025 = 55842^2 + 1945^2 .

It is a cyclic number.

It is not a de Polignac number, because 3122111989 - 2¹³ = 3122103797 is a prime.

It is a super-2 number, since 2×3122111989² = 19495166543715072242, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3122111983) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1561055994 + 1561055995.

It is an arithmetic number, because the mean of its divisors is an integer number (1561055995).

Almost surely, 2^3122111989 is an apocalyptic number.

It is an amenable number.

3122111989 is a deficient number, since it is larger than the sum of its proper divisors (1).

3122111989 is an equidigital number, since it uses as much as digits as its factorization.

3122111989 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7776, while the sum is 37.

The square root of 3122111989 is about 55875.8623110194. The cubic root of 3122111989 is about 1461.5583518731.

The spelling of 3122111989 in words is "three billion, one hundred twenty-two million, one hundred eleven thousand, nine hundred eighty-nine".