22552222 has 24 divisors (see below), whose sum is σ = 42498288. Its totient is φ = 8785920.

The previous prime is 22552199. The next prime is 22552237. The reversal of 22552222 is 22225522.

It is a hoax number, since the sum of its digits (22) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a zygodrome in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 22552193 and 22552202.

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 11 ways as a sum of consecutive naturals, for example, 4963 + ... + 8350.

It is an arithmetic number, because the mean of its divisors is an integer number (1770762).

Almost surely, 2^22552222 is an apocalyptic number.

22552222 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

22552222 is a deficient number, since it is larger than the sum of its proper divisors (19946066).

22552222 is a wasteful number, since it uses less digits than its factorization.

22552222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13344 (or 13333 counting only the distinct ones).

The product of its digits is 1600, while the sum is 22.

The square root of 22552222 is about 4748.9179820250. The cubic root of 22552222 is about 282.5290522762.

Adding to 22552222 its reverse (22225522), we get a palindrome (44777744).

The spelling of 22552222 in words is "twenty-two million, five hundred fifty-two thousand, two hundred twenty-two".