22223222 has 32 divisors (see below), whose sum is σ = 39813120. Its totient is φ = 9102240.

The previous prime is 22223219. The next prime is 22223231. The reversal of 22223222 is 22232222.

It is a super-2 number, since 2×22223222² = 987743192122568, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 22223222.

It is a congruent number.

It is an unprimeable number.

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 in 15 ways as a sum of consecutive naturals, for example, 51347 + ... + 51777.

It is an arithmetic number, because the mean of its divisors is an integer number (1244160).

Almost surely, 2^22223222 is an apocalyptic number.

22223222 is a deficient number, since it is larger than the sum of its proper divisors (17589898).

22223222 is a wasteful number, since it uses less digits than its factorization.

22223222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 596.

The product of its digits is 384, while the sum is 17.

The square root of 22223222 is about 4714.1512491646. The cubic root of 22223222 is about 281.1484379302.

Adding to 22223222 its reverse (22232222), we get a palindrome (44455444).

It can be divided in two parts, 2 and 2223222, that multiplied together give a palindrome (4446444).

The spelling of 22223222 in words is "twenty-two million, two hundred twenty-three thousand, two hundred twenty-two".