220221112220 has 24 divisors (see below), whose sum is σ = 463568086800. Its totient is φ = 87878206592.

The previous prime is 220221112217. The next prime is 220221112271. The reversal of 220221112220 is 22211122022.

It is a happy number.

It is a congruent 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, 13131305 + ... + 13148064.

It is an arithmetic number, because the mean of its divisors is an integer number (19315336950).

Almost surely, 2^220221112220 is an apocalyptic number.

220221112220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

220221112220 is an abundant number, since it is smaller than the sum of its proper divisors (243346974580).

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

220221112220 is a wasteful number, since it uses less digits than its factorization.

220221112220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26279797 (or 26279795 counting only the distinct ones).

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

Adding to 220221112220 its reverse (22211122022), we get a palindrome (242432234242).

The spelling of 220221112220 in words is "two hundred twenty billion, two hundred twenty-one million, one hundred twelve thousand, two hundred twenty".