22180120 has 16 divisors (see below), whose sum is σ = 49905360. Its totient is φ = 8872032.

The previous prime is 22180111. The next prime is 22180141. The reversal of 22180120 is 2108122.

22180120 = 1209² + 1210² + ... + 1223².

It is a junction number, because it is equal to n+sod(n) for n = 22180094 and 22180103.

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, 277212 + ... + 277291.

It is an arithmetic number, because the mean of its divisors is an integer number (3119085).

Almost surely, 2^22180120 is an apocalyptic number.

22180120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22180120 is an abundant number, since it is smaller than the sum of its proper divisors (27725240).

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

22180120 is a wasteful number, since it uses less digits than its factorization.

22180120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 554514 (or 554510 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

The square root of 22180120 is about 4709.5774757403. The cubic root of 22180120 is about 280.9665575716.

Adding to 22180120 its reverse (2108122), we get a palindrome (24288242).

The spelling of 22180120 in words is "twenty-two million, one hundred eighty thousand, one hundred twenty".