2021000202099 has 20 divisors (see below), whose sum is σ = 3019087259496. Its totient is φ = 1347305679936.

The previous prime is 2021000202097. The next prime is 2021000202103. The reversal of 2021000202099 is 9902020001202.

It is not a de Polignac number, because 2021000202099 - 2¹ = 2021000202097 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (2021000202097) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 4159432 + ... + 4619834.

Almost surely, 2^{2021000202099} is an apocalyptic number.

2021000202099 is a deficient number, since it is larger than the sum of its proper divisors (998087057397).

2021000202099 is an equidigital number, since it uses as much as digits as its factorization.

2021000202099 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 514608 (or 514599 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 27.

The spelling of 2021000202099 in words is "two trillion, twenty-one billion, two hundred two thousand, ninety-nine".