22712222 has 16 divisors (see below), whose sum is σ = 36808800. Its totient is φ = 10448352.

The previous prime is 22712171. The next prime is 22712231. The reversal of 22712222 is 22221722.

It is a junction number, because it is equal to n+sod(n) for n = 22712194 and 22712203.

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, 7823 + ... + 10325.

It is an arithmetic number, because the mean of its divisors is an integer number (2300550).

Almost surely, 2^22712222 is an apocalyptic number.

22712222 is a deficient number, since it is larger than the sum of its proper divisors (14096578).

22712222 is a wasteful number, since it uses less digits than its factorization.

22712222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2867.

The product of its digits is 448, while the sum is 20.

The square root of 22712222 is about 4765.7341512090. The cubic root of 22712222 is about 283.1956261228.

Adding to 22712222 its reverse (22221722), we get a palindrome (44933944).

The spelling of 22712222 in words is "twenty-two million, seven hundred twelve thousand, two hundred twenty-two".