212668212 has 24 divisors (see below), whose sum is σ = 517801536. Its totient is φ = 67807168.

The previous prime is 212668201. The next prime is 212668213. The reversal of 212668212 is 212866212.

212668212 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 212668212.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212668213) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 384993 + ... + 385544.

It is an arithmetic number, because the mean of its divisors is an integer number (21575064).

Almost surely, 2^212668212 is an apocalyptic number.

It is an amenable number.

212668212 is an abundant number, since it is smaller than the sum of its proper divisors (305133324).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

212668212 is a wasteful number, since it uses less digits than its factorization.

212668212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 770567 (or 770565 counting only the distinct ones).

The product of its digits is 4608, while the sum is 30.

The square root of 212668212 is about 14583.1482197775. The cubic root of 212668212 is about 596.8990118425.

The spelling of 212668212 in words is "two hundred twelve million, six hundred sixty-eight thousand, two hundred twelve".