212113310209 has 4 divisors (see below), whose sum is σ = 215708451120. Its totient is φ = 208518169300.

The previous prime is 212113310153. The next prime is 212113310243. The reversal of 212113310209 is 902013311212.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 212113310209 - 2²⁹ = 211576439297 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212113310249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1797570367 + ... + 1797570484.

It is an arithmetic number, because the mean of its divisors is an integer number (53927112780).

Almost surely, 2^212113310209 is an apocalyptic number.

It is an amenable number.

212113310209 is a deficient number, since it is larger than the sum of its proper divisors (3595140911).

212113310209 is an equidigital number, since it uses as much as digits as its factorization.

212113310209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3595140910.

The product of its (nonzero) digits is 648, while the sum is 25.

The spelling of 212113310209 in words is "two hundred twelve billion, one hundred thirteen million, three hundred ten thousand, two hundred nine".