22303212 has 24 divisors (see below), whose sum is σ = 52117296. Its totient is φ = 7423488.

The previous prime is 22303199. The next prime is 22303213. The reversal of 22303212 is 21230322.

It is a junction number, because it is equal to n+sod(n) for n = 22303191 and 22303200.

It is not an unprimeable number, because it can be changed into a prime (22303213) 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, 14848 + ... + 16280.

It is an arithmetic number, because the mean of its divisors is an integer number (2171554).

Almost surely, 2^22303212 is an apocalyptic number.

It is an amenable number.

22303212 is an abundant number, since it is smaller than the sum of its proper divisors (29814084).

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

22303212 is a wasteful number, since it uses less digits than its factorization.

22303212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2737 (or 2735 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 15.

The square root of 22303212 is about 4722.6276584122. The cubic root of 22303212 is about 281.4853547986.

Adding to 22303212 its reverse (21230322), we get a palindrome (43533534).

The spelling of 22303212 in words is "twenty-two million, three hundred three thousand, two hundred twelve".