2112100022109 has 64 divisors (see below), whose sum is σ = 3582088445952. Its totient is φ = 1075158532800.

The previous prime is 2112100022099. The next prime is 2112100022117. The reversal of 2112100022109 is 9012200012112.

It is not a de Polignac number, because 2112100022109 - 2¹⁵ = 2112099989341 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2112100022129) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2598864 + ... + 3313350.

It is an arithmetic number, because the mean of its divisors is an integer number (55970131968).

Almost surely, 2^{2112100022109} is an apocalyptic number.

It is an amenable number.

2112100022109 is a deficient number, since it is larger than the sum of its proper divisors (1469988423843).

2112100022109 is a wasteful number, since it uses less digits than its factorization.

2112100022109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 714766.

The product of its (nonzero) digits is 144, while the sum is 21.

The spelling of 2112100022109 in words is "two trillion, one hundred twelve billion, one hundred million, twenty-two thousand, one hundred nine".