212113218 has 8 divisors (see below), whose sum is σ = 424226448. Its totient is φ = 70704404.

The previous prime is 212113189. The next prime is 212113219. The reversal of 212113218 is 812311212.

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

212113218 is an admirable number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 212113194 and 212113203.

It is not an unprimeable number, because it can be changed into a prime (212113219) 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, 17676096 + ... + 17676107.

It is an arithmetic number, because the mean of its divisors is an integer number (53028306).

Almost surely, 2^212113218 is an apocalyptic number.

212113218 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

212113218 is a wasteful number, since it uses less digits than its factorization.

212113218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35352208.

The product of its digits is 192, while the sum is 21.

The square root of 212113218 is about 14564.1071816984. The cubic root of 212113218 is about 596.3793228885.

The spelling of 212113218 in words is "two hundred twelve million, one hundred thirteen thousand, two hundred eighteen".