222021221120 has 72 divisors (see below), whose sum is σ = 533543431344. Its totient is φ = 88519053312.

The previous prime is 222021221119. The next prime is 222021221171. The reversal of 222021221120 is 21122120222.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 110462 + ... + 675458.

Almost surely, 2^222021221120 is an apocalyptic number.

222021221120 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 222021221120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (266771715672).

222021221120 is an abundant number, since it is smaller than the sum of its proper divisors (311522210224).

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

222021221120 is an equidigital number, since it uses as much as digits as its factorization.

222021221120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 565325 (or 565311 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 222021221120 its reverse (21122120222), we get a palindrome (243143341342).

The spelling of 222021221120 in words is "two hundred twenty-two billion, twenty-one million, two hundred twenty-one thousand, one hundred twenty".