22231120 has 20 divisors (see below), whose sum is σ = 51687540. Its totient is φ = 8892416.

The previous prime is 22231067. The next prime is 22231147. The reversal of 22231120 is 2113222.

It can be written as a sum of positive squares in 2 ways, for example, as 11102224 + 11128896 = 3332^2 + 3336^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 22231120.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 138865 + ... + 139024.

It is an arithmetic number, because the mean of its divisors is an integer number (2584377).

Almost surely, 2^22231120 is an apocalyptic number.

22231120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22231120 is an abundant number, since it is smaller than the sum of its proper divisors (29456420).

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

22231120 is a wasteful number, since it uses less digits than its factorization.

22231120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 277902 (or 277896 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 22231120 is about 4714.9888653103. The cubic root of 22231120 is about 281.1817401424.

Adding to 22231120 its reverse (2113222), we get a palindrome (24344342).

The spelling of 22231120 in words is "twenty-two million, two hundred thirty-one thousand, one hundred twenty".