2102020201999 has 4 divisors (see below), whose sum is σ = 2115408865864. Its totient is φ = 2088631538136.

The previous prime is 2102020201969. The next prime is 2102020202027. The reversal of 2102020201999 is 9991020202012.

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

It is a cyclic number.

It is not a de Polignac number, because 2102020201999 - 2⁷ = 2102020201871 is a prime.

It is a super-2 number, since 2×2102020201999² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2102020201909) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6694331697 + ... + 6694332010.

It is an arithmetic number, because the mean of its divisors is an integer number (528852216466).

Almost surely, 2^{2102020201999} is an apocalyptic number.

2102020201999 is a deficient number, since it is larger than the sum of its proper divisors (13388663865).

2102020201999 is a wasteful number, since it uses less digits than its factorization.

2102020201999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13388663864.

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

The spelling of 2102020201999 in words is "two trillion, one hundred two billion, twenty million, two hundred one thousand, nine hundred ninety-nine".