22101222 has 32 divisors (see below), whose sum is σ = 51932160. Its totient is φ = 6181920.

The previous prime is 22101193. The next prime is 22101239. The reversal of 22101222 is 22210122.

It is a junction number, because it is equal to n+sod(n) for n = 22101198 and 22101207.

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, 12022 + ... + 13737.

It is an arithmetic number, because the mean of its divisors is an integer number (1622880).

Almost surely, 2^22101222 is an apocalyptic number.

22101222 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

22101222 is an abundant number, since it is smaller than the sum of its proper divisors (29830938).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22101222 is a wasteful number, since it uses less digits than its factorization.

22101222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25788.

The product of its (nonzero) digits is 32, while the sum is 12.

The square root of 22101222 is about 4701.1936782056. The cubic root of 22101222 is about 280.6330151000.

Adding to 22101222 its reverse (22210122), we get a palindrome (44311344).

Subtracting 22101222 from its reverse (22210122), we obtain a square (108900 = 330²).

It can be divided in two parts, 2210122 and 2, that multiplied together give a palindrome (4420244).

The spelling of 22101222 in words is "twenty-two million, one hundred one thousand, two hundred twenty-two".