22500120 has 64 divisors (see below), whose sum is σ = 68231520. Its totient is φ = 5935104.

The previous prime is 22500119. The next prime is 22500131. The reversal of 22500120 is 2100522.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 22500096 and 22500105.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10674 + ... + 12606.

Almost surely, 2^22500120 is an apocalyptic number.

22500120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22500120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34115760).

22500120 is an abundant number, since it is smaller than the sum of its proper divisors (45731400).

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

22500120 is a wasteful number, since it uses less digits than its factorization.

22500120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2044 (or 2040 counting only the distinct ones).

The product of its (nonzero) digits is 40, while the sum is 12.

The square root of 22500120 is about 4743.4291393463. The cubic root of 22500120 is about 282.3113105493.

Adding to 22500120 its reverse (2100522), we get a palindrome (24600642).

The spelling of 22500120 in words is "twenty-two million, five hundred thousand, one hundred twenty".