212210222 has 16 divisors (see below), whose sum is σ = 363978240. Its totient is φ = 90899928.

The previous prime is 212210171. The next prime is 212210237. The reversal of 212210222 is 222012212.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a junction number, because it is equal to n+sod(n) for n = 212210197 and 212210206.

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, 44183 + ... + 48749.

It is an arithmetic number, because the mean of its divisors is an integer number (22748640).

Almost surely, 2^212210222 is an apocalyptic number.

212210222 is a deficient number, since it is larger than the sum of its proper divisors (151768018).

212210222 is a wasteful number, since it uses less digits than its factorization.

212210222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7895.

The product of its (nonzero) digits is 64, while the sum is 14.

The square root of 212210222 is about 14567.4370429393. The cubic root of 212210222 is about 596.4702214564.

Adding to 212210222 its reverse (222012212), we get a palindrome (434222434).

The spelling of 212210222 in words is "two hundred twelve million, two hundred ten thousand, two hundred twenty-two".