212342222 has 8 divisors (see below), whose sum is σ = 321021696. Its totient is φ = 105334992.

The previous prime is 212342209. The next prime is 212342237. The reversal of 212342222 is 222243212.

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

It is a junction number, because it is equal to n+sod(n) for n = 212342194 and 212342203.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 417743 + ... + 418250.

It is an arithmetic number, because the mean of its divisors is an integer number (40127712).

Almost surely, 2^212342222 is an apocalyptic number.

212342222 is a deficient number, since it is larger than the sum of its proper divisors (108679474).

212342222 is a wasteful number, since it uses less digits than its factorization.

212342222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 836122.

The product of its digits is 768, while the sum is 20.

The square root of 212342222 is about 14571.9669914531. The cubic root of 212342222 is about 596.5938688931.

Adding to 212342222 its reverse (222243212), we get a palindrome (434585434).

The spelling of 212342222 in words is "two hundred twelve million, three hundred forty-two thousand, two hundred twenty-two".