2100120089 has 2 divisors, whose sum is σ = 2100120090. Its totient is φ = 2100120088.

The previous prime is 2100120083. The next prime is 2100120107. The reversal of 2100120089 is 9800210012.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1854163600 + 245956489 = 43060^2 + 15683^2 .

It is a cyclic number.

It is not a de Polignac number, because 2100120089 - 2⁴ = 2100120073 is a prime.

It is not a weakly prime, because it can be changed into another prime (2100120083) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1050060044 + 1050060045.

It is an arithmetic number, because the mean of its divisors is an integer number (1050060045).

Almost surely, 2^2100120089 is an apocalyptic number.

It is an amenable number.

2100120089 is a deficient number, since it is larger than the sum of its proper divisors (1).

2100120089 is an equidigital number, since it uses as much as digits as its factorization.

2100120089 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 2100120089 is about 45827.0672092378. The cubic root of 2100120089 is about 1280.6035745970.

The spelling of 2100120089 in words is "two billion, one hundred million, one hundred twenty thousand, eighty-nine".