2102112209 has 8 divisors (see below), whose sum is σ = 2196199872. Its totient is φ = 2008248880.

The previous prime is 2102112179. The next prime is 2102112211. The reversal of 2102112209 is 9022112012.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2102112209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2102112269) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36779 + ... + 74544.

It is an arithmetic number, because the mean of its divisors is an integer number (274524984).

Almost surely, 2^2102112209 is an apocalyptic number.

It is an amenable number.

2102112209 is a deficient number, since it is larger than the sum of its proper divisors (94087663).

2102112209 is a wasteful number, since it uses less digits than its factorization.

2102112209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112167.

The product of its (nonzero) digits is 144, while the sum is 20.

The square root of 2102112209 is about 45848.7972470380. The cubic root of 2102112209 is about 1281.0083625248.

The spelling of 2102112209 in words is "two billion, one hundred two million, one hundred twelve thousand, two hundred nine".