22016222 has 4 divisors (see below), whose sum is σ = 33024336. Its totient is φ = 11008110.

The previous prime is 22016219. The next prime is 22016261. The reversal of 22016222 is 22261022.

It is a semiprime because it is the product of two primes.

It is a self number, because there is not a number n which added to its sum of digits gives 22016222.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5504054 + ... + 5504057.

It is an arithmetic number, because the mean of its divisors is an integer number (8256084).

Almost surely, 2^22016222 is an apocalyptic number.

22016222 is a deficient number, since it is larger than the sum of its proper divisors (11008114).

22016222 is a wasteful number, since it uses less digits than its factorization.

22016222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11008113.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 22016222 is about 4692.1447121759. The cubic root of 22016222 is about 280.2727868752.

Adding to 22016222 its reverse (22261022), we get a palindrome (44277244).

The spelling of 22016222 in words is "twenty-two million, sixteen thousand, two hundred twenty-two".