22220120 has 96 divisors (see below), whose sum is σ = 57315600. Its totient is φ = 7727616.

The previous prime is 22220117. The next prime is 22220131. The reversal of 22220120 is 2102222.

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 23 ways as a sum of consecutive naturals, for example, 128354 + ... + 128526.

Almost surely, 2^22220120 is an apocalyptic number.

22220120 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 22220120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28657800).

22220120 is an abundant number, since it is smaller than the sum of its proper divisors (35095480).

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

22220120 is a wasteful number, since it uses less digits than its factorization.

22220120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 229 (or 212 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 11.

The square root of 22220120 is about 4713.8222282984. The cubic root of 22220120 is about 281.1353560732.

Adding to 22220120 its reverse (2102222), we get a palindrome (24322342).

The spelling of 22220120 in words is "twenty-two million, two hundred twenty thousand, one hundred twenty".