220221112021100 has 72 divisors (see below), whose sum is σ = 478675457945328. Its totient is φ = 87941810995200.

The previous prime is 220221112021093. The next prime is 220221112021151. The reversal of 220221112021100 is 1120211122022.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 629094719 + ... + 629444681.

Almost surely, 2^{220221112021100} is an apocalyptic number.

220221112021100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

220221112021100 is an abundant number, since it is smaller than the sum of its proper divisors (258454345924228).

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

220221112021100 is a wasteful number, since it uses less digits than its factorization.

220221112021100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 360435 (or 360428 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 220221112021100 its reverse (1120211122022), we get a palindrome (221341323143122).

The spelling of 220221112021100 in words is "two hundred twenty trillion, two hundred twenty-one billion, one hundred twelve million, twenty-one thousand, one hundred".