222442120 has 64 divisors (see below), whose sum is σ = 528796800. Its totient is φ = 83980800.

The previous prime is 222442091. The next prime is 222442123. The reversal of 222442120 is 21244222.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is not an unprimeable number, because it can be changed into a prime (222442123) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 369820 + ... + 370420.

It is an arithmetic number, because the mean of its divisors is an integer number (8262450).

Almost surely, 2^222442120 is an apocalyptic number.

222442120 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 222442120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (264398400).

222442120 is an abundant number, since it is smaller than the sum of its proper divisors (306354680).

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

222442120 is a wasteful number, since it uses less digits than its factorization.

222442120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1118 (or 1114 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 19.

The square root of 222442120 is about 14914.4936219772. The cubic root of 222442120 is about 605.9065888035.

Adding to 222442120 its reverse (21244222), we get a palindrome (243686342).

It can be divided in two parts, 2224 and 42120, that added together give a palindrome (44344).

The spelling of 222442120 in words is "two hundred twenty-two million, four hundred forty-two thousand, one hundred twenty".