2012102100209 has 16 divisors (see below), whose sum is σ = 2039763835200. Its totient is φ = 1984661352000.

The previous prime is 2012102100181. The next prime is 2012102100251. The reversal of 2012102100209 is 9020012012102.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 2012102100209 - 2¹⁶ = 2012102034673 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2012102100409) 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, 18581594 + ... + 18689564.

It is an arithmetic number, because the mean of its divisors is an integer number (127485239700).

Almost surely, 2^{2012102100209} is an apocalyptic number.

It is an amenable number.

2012102100209 is a deficient number, since it is larger than the sum of its proper divisors (27661734991).

2012102100209 is a wasteful number, since it uses less digits than its factorization.

2012102100209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108992.

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

The spelling of 2012102100209 in words is "two trillion, twelve billion, one hundred two million, one hundred thousand, two hundred nine".