2102120012209 has 16 divisors (see below), whose sum is σ = 2404138674816. Its totient is φ = 1800530640000.

The previous prime is 2102120012119. The next prime is 2102120012219. The reversal of 2102120012209 is 9022100212012.

It is a cyclic number.

It is not a de Polignac number, because 2102120012209 - 2⁷ = 2102120012081 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2102120012209.

It is not an unprimeable number, because it can be changed into a prime (2102120012219) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 129856614 + ... + 129872800.

It is an arithmetic number, because the mean of its divisors is an integer number (150258667176).

Almost surely, 2^{2102120012209} is an apocalyptic number.

It is an amenable number.

2102120012209 is a deficient number, since it is larger than the sum of its proper divisors (302018662607).

2102120012209 is a wasteful number, since it uses less digits than its factorization.

2102120012209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28296.

The product of its (nonzero) digits is 288, while the sum is 22.

The spelling of 2102120012209 in words is "two trillion, one hundred two billion, one hundred twenty million, twelve thousand, two hundred nine".