2021213120099 has 12 divisors (see below), whose sum is σ = 2089264667688. Its totient is φ = 1955312262720.

The previous prime is 2021213120077. The next prime is 2021213120111. The reversal of 2021213120099 is 9900213121202.

It is a happy number.

It is not a de Polignac number, because 2021213120099 - 2⁸ = 2021213119843 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2021213120029) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2318507 + ... + 3068859.

It is an arithmetic number, because the mean of its divisors is an integer number (174105388974).

Almost surely, 2^{2021213120099} is an apocalyptic number.

2021213120099 is a deficient number, since it is larger than the sum of its proper divisors (68051547589).

2021213120099 is an equidigital number, since it uses as much as digits as its factorization.

2021213120099 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 753218 (or 753187 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 32.

The spelling of 2021213120099 in words is "two trillion, twenty-one billion, two hundred thirteen million, one hundred twenty thousand, ninety-nine".