22210212 has 24 divisors (see below), whose sum is σ = 53225536. Its totient is φ = 7203168.

The previous prime is 22210207. The next prime is 22210213. The reversal of 22210212 is 21201222.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is not an unprimeable number, because it can be changed into a prime (22210213) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24568 + ... + 25455.

Almost surely, 2^22210212 is an apocalyptic number.

It is an amenable number.

22210212 is an abundant number, since it is smaller than the sum of its proper divisors (31015324).

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

22210212 is a wasteful number, since it uses less digits than its factorization.

22210212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50067 (or 50065 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 12.

The square root of 22210212 is about 4712.7711593074. The cubic root of 22210212 is about 281.0935635712.

Adding to 22210212 its reverse (21201222), we get a palindrome (43411434).

It can be divided in two parts, 22210 and 212, that added together give a palindrome (22422).

The spelling of 22210212 in words is "twenty-two million, two hundred ten thousand, two hundred twelve".