212333100209 has 4 divisors (see below), whose sum is σ = 214891330416. Its totient is φ = 209774870004.

The previous prime is 212333100167. The next prime is 212333100263. The reversal of 212333100209 is 902001333212.

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 212333100209 - 2¹⁶ = 212333034673 is a prime.

It is a super-3 number, since 3×212333100209³ (a number of 35 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212333100269) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1279114979 + ... + 1279115144.

It is an arithmetic number, because the mean of its divisors is an integer number (53722832604).

Almost surely, 2^212333100209 is an apocalyptic number.

It is an amenable number.

212333100209 is a deficient number, since it is larger than the sum of its proper divisors (2558230207).

212333100209 is an equidigital number, since it uses as much as digits as its factorization.

212333100209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2558230206.

The product of its (nonzero) digits is 1944, while the sum is 26.

The spelling of 212333100209 in words is "two hundred twelve billion, three hundred thirty-three million, one hundred thousand, two hundred nine".