2110122109 has 2 divisors, whose sum is σ = 2110122110. Its totient is φ = 2110122108.

The previous prime is 2110122089. The next prime is 2110122137. The reversal of 2110122109 is 9012210112.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1563965209 + 546156900 = 39547^2 + 23370^2 .

It is a cyclic number.

It is not a de Polignac number, because 2110122109 - 2¹⁹ = 2109597821 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2110122139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1055061054 + 1055061055.

It is an arithmetic number, because the mean of its divisors is an integer number (1055061055).

Almost surely, 2^2110122109 is an apocalyptic number.

It is an amenable number.

2110122109 is a deficient number, since it is larger than the sum of its proper divisors (1).

2110122109 is an equidigital number, since it uses as much as digits as its factorization.

2110122109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72, while the sum is 19.

The square root of 2110122109 is about 45936.0654497096. The cubic root of 2110122109 is about 1282.6333540959.

The spelling of 2110122109 in words is "two billion, one hundred ten million, one hundred twenty-two thousand, one hundred nine".