2122990139 has 2 divisors, whose sum is σ = 2122990140. Its totient is φ = 2122990138.

The previous prime is 2122990123. The next prime is 2122990159. The reversal of 2122990139 is 9310992212.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2122990139 - 2⁴ = 2122990123 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (2122990159) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1061495069 + 1061495070.

It is an arithmetic number, because the mean of its divisors is an integer number (1061495070).

Almost surely, 2^2122990139 is an apocalyptic number.

2122990139 is a deficient number, since it is larger than the sum of its proper divisors (1).

2122990139 is an equidigital number, since it uses as much as digits as its factorization.

2122990139 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17496, while the sum is 38.

The square root of 2122990139 is about 46075.9171259781. The cubic root of 2122990139 is about 1285.2353405254.

The spelling of 2122990139 in words is "two billion, one hundred twenty-two million, nine hundred ninety thousand, one hundred thirty-nine".