2100220009999 has 4 divisors (see below), whose sum is σ = 2100231988360. Its totient is φ = 2100208031640.

The previous prime is 2100220009913. The next prime is 2100220010059. The reversal of 2100220009999 is 9999000220012.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2100220009999 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2100220009399) 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, 5722212 + ... + 6078169.

It is an arithmetic number, because the mean of its divisors is an integer number (525057997090).

Almost surely, 2^{2100220009999} is an apocalyptic number.

2100220009999 is a deficient number, since it is larger than the sum of its proper divisors (11978361).

2100220009999 is a wasteful number, since it uses less digits than its factorization.

2100220009999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11978360.

The product of its (nonzero) digits is 52488, while the sum is 43.

The spelling of 2100220009999 in words is "two trillion, one hundred billion, two hundred twenty million, nine thousand, nine hundred ninety-nine".