22022212 has 12 divisors (see below), whose sum is σ = 39082176. Its totient is φ = 10855880.

The previous prime is 22022167. The next prime is 22022213. The reversal of 22022212 is 21222022.

It is a junction number, because it is equal to n+sod(n) for n = 22022192 and 22022201.

It is not an unprimeable number, because it can be changed into a prime (22022213) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38488 + ... + 39055.

It is an arithmetic number, because the mean of its divisors is an integer number (3256848).

Almost surely, 2^22022212 is an apocalyptic number.

It is an amenable number.

22022212 is a deficient number, since it is larger than the sum of its proper divisors (17059964).

22022212 is a wasteful number, since it uses less digits than its factorization.

22022212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77618 (or 77616 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 13.

The square root of 22022212 is about 4692.7829696247. The cubic root of 22022212 is about 280.2982027067.

Adding to 22022212 its reverse (21222022), we get a palindrome (43244234).

It can be divided in two parts, 22022 and 212, that multiplied together give a palindrome (4668664).

The spelling of 22022212 in words is "twenty-two million, twenty-two thousand, two hundred twelve".