22361212 has 6 divisors (see below), whose sum is σ = 39132128. Its totient is φ = 11180604.

The previous prime is 22361203. The next prime is 22361219. The reversal of 22361212 is 21216322.

It is a self number, because there is not a number n which added to its sum of digits gives 22361212.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22361219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2795148 + ... + 2795155.

Almost surely, 2^22361212 is an apocalyptic number.

It is an amenable number.

22361212 is a deficient number, since it is larger than the sum of its proper divisors (16770916).

22361212 is a wasteful number, since it uses less digits than its factorization.

22361212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5590307 (or 5590305 counting only the distinct ones).

The product of its digits is 288, while the sum is 19.

The square root of 22361212 is about 4728.7643206233. The cubic root of 22361212 is about 281.7291465720.

Adding to 22361212 its reverse (21216322), we get a palindrome (43577534).

The spelling of 22361212 in words is "twenty-two million, three hundred sixty-one thousand, two hundred twelve".