212219922 has 8 divisors (see below), whose sum is σ = 424439856. Its totient is φ = 70739972.

The previous prime is 212219881. The next prime is 212219927. The reversal of 212219922 is 229912212.

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

212219922 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 212219922.

It is not an unprimeable number, because it can be changed into a prime (212219927) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17684988 + ... + 17684999.

It is an arithmetic number, because the mean of its divisors is an integer number (53054982).

Almost surely, 2^212219922 is an apocalyptic number.

212219922 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.

212219922 is a wasteful number, since it uses less digits than its factorization.

212219922 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35369992.

The product of its digits is 2592, while the sum is 30.

The square root of 212219922 is about 14567.7699734723. The cubic root of 212219922 is about 596.4793094147.

The spelling of 212219922 in words is "two hundred twelve million, two hundred nineteen thousand, nine hundred twenty-two".