210212120099 has 4 divisors (see below), whose sum is σ = 210817919064. Its totient is φ = 209606321136.

The previous prime is 210212120089. The next prime is 210212120117. The reversal of 210212120099 is 990021212012.

210212120099 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 210212120099 - 2²⁴ = 210195342883 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (210212120089) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 302898962 + ... + 302899655.

It is an arithmetic number, because the mean of its divisors is an integer number (52704479766).

Almost surely, 2^210212120099 is an apocalyptic number.

210212120099 is a deficient number, since it is larger than the sum of its proper divisors (605798965).

210212120099 is an equidigital number, since it uses as much as digits as its factorization.

210212120099 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 605798964.

The product of its (nonzero) digits is 1296, while the sum is 29.

The spelling of 210212120099 in words is "two hundred ten billion, two hundred twelve million, one hundred twenty thousand, ninety-nine".