22220236 has 6 divisors (see below), whose sum is σ = 38885420. Its totient is φ = 11110116.

The previous prime is 22220227. The next prime is 22220249. The reversal of 22220236 is 63202222.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2777526 + ... + 2777533.

Almost surely, 2^22220236 is an apocalyptic number.

It is an amenable number.

22220236 is a deficient number, since it is larger than the sum of its proper divisors (16665184).

22220236 is a wasteful number, since it uses less digits than its factorization.

22220236 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5555063 (or 5555061 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 22220236 is about 4713.8345325223. The cubic root of 22220236 is about 281.1358452942.

Adding to 22220236 its reverse (63202222), we get a palindrome (85422458).

The spelling of 22220236 in words is "twenty-two million, two hundred twenty thousand, two hundred thirty-six".