220221220100 has 72 divisors (see below), whose sum is σ = 547511290368. Its totient is φ = 75316032000.

The previous prime is 220221220091. The next prime is 220221220159. The reversal of 220221220100 is 1022122022.

It is a Harshad number since it is a multiple of its sum of digits (14).

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, 111572 + ... + 672971.

Almost surely, 2^220221220100 is an apocalyptic number.

220221220100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

220221220100 is an abundant number, since it is smaller than the sum of its proper divisors (327290070268).

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

220221220100 is a wasteful number, since it uses less digits than its factorization.

220221220100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 784965 (or 784958 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 14.

Adding to 220221220100 its reverse (1022122022), we get a palindrome (221243342122).

The spelling of 220221220100 in words is "two hundred twenty billion, two hundred twenty-one million, two hundred twenty thousand, one hundred".