2021021100219 has 16 divisors (see below), whose sum is σ = 2939691012480. Its totient is φ = 1224851290560.

The previous prime is 2021021100199. The next prime is 2021021100257. The reversal of 2021021100219 is 9120011201202.

It is not a de Polignac number, because 2021021100219 - 2⁵ = 2021021100187 is a prime.

It is a super-2 number, since 2×2021021100219² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2021021100195 and 2021021100204.

It is not an unprimeable number, because it can be changed into a prime (2021021100299) 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, 7032304 + ... + 7314050.

It is an arithmetic number, because the mean of its divisors is an integer number (183730688280).

Almost surely, 2^{2021021100219} is an apocalyptic number.

2021021100219 is a deficient number, since it is larger than the sum of its proper divisors (918669912261).

2021021100219 is a wasteful number, since it uses less digits than its factorization.

2021021100219 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 499130.

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

The spelling of 2021021100219 in words is "two trillion, twenty-one billion, twenty-one million, one hundred thousand, two hundred nineteen".