222012120 has 128 divisors (see below), whose sum is σ = 736128000. Its totient is φ = 53114880.

The previous prime is 222012083. The next prime is 222012121. The reversal of 222012120 is 21210222.

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 = 222012096 and 222012105.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222012121) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 103216 + ... + 105344.

It is an arithmetic number, because the mean of its divisors is an integer number (5751000).

Almost surely, 2^222012120 is an apocalyptic number.

222012120 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 222012120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (368064000).

222012120 is an abundant number, since it is smaller than the sum of its proper divisors (514115880).

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

222012120 is a wasteful number, since it uses less digits than its factorization.

222012120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2233 (or 2229 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 12.

The square root of 222012120 is about 14900.0711407698. The cubic root of 222012120 is about 605.5159135487.

Adding to 222012120 its reverse (21210222), we get a palindrome (243222342).

The spelling of 222012120 in words is "two hundred twenty-two million, twelve thousand, one hundred twenty".