100122089 has 2 divisors, whose sum is σ = 100122090. Its totient is φ = 100122088.

The previous prime is 100122067. The next prime is 100122179. The reversal of 100122089 is 980221001.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 60217600 + 39904489 = 7760^2 + 6317^2 .

It is a cyclic number.

It is not a de Polignac number, because 100122089 - 2¹² = 100117993 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (100122049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50061044 + 50061045.

It is an arithmetic number, because the mean of its divisors is an integer number (50061045).

Almost surely, 2^100122089 is an apocalyptic number.

It is an amenable number.

100122089 is a deficient number, since it is larger than the sum of its proper divisors (1).

100122089 is an equidigital number, since it uses as much as digits as its factorization.

100122089 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 288, while the sum is 23.

The square root of 100122089 is about 10006.1025879210. The cubic root of 100122089 is about 464.3477021861.

The spelling of 100122089 in words is "one hundred million, one hundred twenty-two thousand, eighty-nine".