212023312099 has 4 divisors (see below), whose sum is σ = 212084789400. Its totient is φ = 211961834800.

The previous prime is 212023312069. The next prime is 212023312117. The reversal of 212023312099 is 990213320212.

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 212023312099 - 2²⁵ = 211989757667 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212023312009) 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, 30733477 + ... + 30740374.

It is an arithmetic number, because the mean of its divisors is an integer number (53021197350).

Almost surely, 2^212023312099 is an apocalyptic number.

212023312099 is a deficient number, since it is larger than the sum of its proper divisors (61477301).

212023312099 is an equidigital number, since it uses as much as digits as its factorization.

212023312099 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61477300.

The product of its (nonzero) digits is 11664, while the sum is 34.

The spelling of 212023312099 in words is "two hundred twelve billion, twenty-three million, three hundred twelve thousand, ninety-nine".