2100042100999 has 16 divisors (see below), whose sum is σ = 2135128143456. Its totient is φ = 2065267814400.

The previous prime is 2100042100993. The next prime is 2100042101041. The reversal of 2100042100999 is 9990012400012.

It is a cyclic number.

It is not a de Polignac number, because 2100042100999 - 2¹¹ = 2100042098951 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 (2100042100993) 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, 10679364 + ... + 10874230.

It is an arithmetic number, because the mean of its divisors is an integer number (133445508966).

Almost surely, 2^{2100042100999} is an apocalyptic number.

2100042100999 is a deficient number, since it is larger than the sum of its proper divisors (35086042457).

2100042100999 is a wasteful number, since it uses less digits than its factorization.

2100042100999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 195666.

The product of its (nonzero) digits is 11664, while the sum is 37.

The spelling of 2100042100999 in words is "two trillion, one hundred billion, forty-two million, one hundred thousand, nine hundred ninety-nine".