2109123122 has 8 divisors (see below), whose sum is σ = 3349783836. Its totient is φ = 992528512.

The previous prime is 2109123097. The next prime is 2109123127. The reversal of 2109123122 is 2213219012.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 2008742761 + 100380361 = 44819^2 + 10019^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (2109123127) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31016483 + ... + 31016550.

Almost surely, 2^2109123122 is an apocalyptic number.

2109123122 is a deficient number, since it is larger than the sum of its proper divisors (1240660714).

2109123122 is a wasteful number, since it uses less digits than its factorization.

2109123122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62033052.

The product of its (nonzero) digits is 432, while the sum is 23.

The square root of 2109123122 is about 45925.1904949778. The cubic root of 2109123122 is about 1282.4309114190.

The spelling of 2109123122 in words is "two billion, one hundred nine million, one hundred twenty-three thousand, one hundred twenty-two".