212243422 has 16 divisors (see below), whose sum is σ = 329715072. Its totient is φ = 102360960.

The previous prime is 212243413. The next prime is 212243459. The reversal of 212243422 is 224342212.

It is a junction number, because it is equal to n+sod(n) for n = 212243393 and 212243402.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13938 + ... + 24874.

It is an arithmetic number, because the mean of its divisors is an integer number (20607192).

Almost surely, 2^212243422 is an apocalyptic number.

212243422 is a deficient number, since it is larger than the sum of its proper divisors (117471650).

212243422 is a wasteful number, since it uses less digits than its factorization.

212243422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11283.

The product of its digits is 1536, while the sum is 22.

The square root of 212243422 is about 14568.5765262087. The cubic root of 212243422 is about 596.5013254854.

Adding to 212243422 its reverse (224342212), we get a palindrome (436585634).

The spelling of 212243422 in words is "two hundred twelve million, two hundred forty-three thousand, four hundred twenty-two".