220221120 has 112 divisors (see below), whose sum is σ = 799112448. Its totient is φ = 50334720.

The previous prime is 220221101. The next prime is 220221143. The reversal of 220221120 is 21122022.

It is a tau number, because it is divible by the number of its divisors (112).

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 = 220221096 and 220221105.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9666 + ... + 23105.

Almost surely, 2^220221120 is an apocalyptic number.

220221120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

220221120 is an abundant number, since it is smaller than the sum of its proper divisors (578891328).

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

220221120 is a wasteful number, since it uses less digits than its factorization.

220221120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32798 (or 32788 counting only the distinct ones).

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

The square root of 220221120 is about 14839.8490558361. The cubic root of 220221120 is about 603.8832574103.

Adding to 220221120 its reverse (21122022), we get a palindrome (241343142).

The spelling of 220221120 in words is "two hundred twenty million, two hundred twenty-one thousand, one hundred twenty".