22422212 has 6 divisors (see below), whose sum is σ = 39238878. Its totient is φ = 11211104.

The previous prime is 22422199. The next prime is 22422227. The reversal of 22422212 is 21222422.

It can be written as a sum of positive squares in only one way, i.e., 20214016 + 2208196 = 4496^2 + 1486^2 .

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2802773 + ... + 2802780.

It is an arithmetic number, because the mean of its divisors is an integer number (6539813).

Almost surely, 2^22422212 is an apocalyptic number.

It is an amenable number.

22422212 is a deficient number, since it is larger than the sum of its proper divisors (16816666).

22422212 is a wasteful number, since it uses less digits than its factorization.

22422212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5605557 (or 5605555 counting only the distinct ones).

The product of its digits is 256, while the sum is 17.

The square root of 22422212 is about 4735.2098158371. The cubic root of 22422212 is about 281.9850938586.

Adding to 22422212 its reverse (21222422), we get a palindrome (43644634).

The spelling of 22422212 in words is "twenty-two million, four hundred twenty-two thousand, two hundred twelve".