22211120 has 20 divisors (see below), whose sum is σ = 51641040. Its totient is φ = 8884416.

The previous prime is 22211099. The next prime is 22211131. The reversal of 22211120 is 2111222.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (20).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 138740 + ... + 138899.

It is an arithmetic number, because the mean of its divisors is an integer number (2582052).

Almost surely, 2^22211120 is an apocalyptic number.

22211120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22211120 is an abundant number, since it is smaller than the sum of its proper divisors (29429920).

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

22211120 is a wasteful number, since it uses less digits than its factorization.

22211120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 277652 (or 277646 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

The square root of 22211120 is about 4712.8674923023. The cubic root of 22211120 is about 281.0973940836.

Adding to 22211120 its reverse (2111222), we get a palindrome (24322342).

It can be divided in two parts, 2 and 2211120, that added together give a palindrome (2211122).

The spelling of 22211120 in words is "twenty-two million, two hundred eleven thousand, one hundred twenty".