212212210209 has 8 divisors (see below), whose sum is σ = 292706496960. Its totient is φ = 136596365136.

The previous prime is 212212210201. The next prime is 212212210261. The reversal of 212212210209 is 902012212212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 212212210209 - 2³ = 212212210201 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (212212210201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1219610317 + ... + 1219610490.

It is an arithmetic number, because the mean of its divisors is an integer number (36588312120).

Almost surely, 2^212212210209 is an apocalyptic number.

212212210209 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

It is an amenable number.

212212210209 is a deficient number, since it is larger than the sum of its proper divisors (80494286751).

212212210209 is a wasteful number, since it uses less digits than its factorization.

212212210209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2439220839.

The product of its (nonzero) digits is 576, while the sum is 24.

The spelling of 212212210209 in words is "two hundred twelve billion, two hundred twelve million, two hundred ten thousand, two hundred nine".