22501120 has 36 divisors (see below), whose sum is σ = 53900280. Its totient is φ = 8999936.

The previous prime is 22501099. The next prime is 22501139. The reversal of 22501120 is 2110522.

It is a self number, because there is not a number n which added to its sum of digits gives 22501120.

It is a congruent number.

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, 7510 + ... + 10069.

It is an arithmetic number, because the mean of its divisors is an integer number (1497230).

Almost surely, 2^22501120 is an apocalyptic number.

22501120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22501120 is an abundant number, since it is smaller than the sum of its proper divisors (31399160).

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

22501120 is an equidigital number, since it uses as much as digits as its factorization.

22501120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17600 (or 17586 counting only the distinct ones).

The product of its (nonzero) digits is 40, while the sum is 13.

The square root of 22501120 is about 4743.5345471494. The cubic root of 22501120 is about 282.3154928548.

Adding to 22501120 its reverse (2110522), we get a palindrome (24611642).

The spelling of 22501120 in words is "twenty-two million, five hundred one thousand, one hundred twenty".