220221010100 has 108 divisors (see below), whose sum is σ = 591391461024. Its totient is φ = 69696282240.

The previous prime is 220221010013. The next prime is 220221010111. The reversal of 220221010100 is 1010122022.

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 35 ways as a sum of consecutive naturals, for example, 812474 + ... + 1049073.

Almost surely, 2^220221010100 is an apocalyptic number.

220221010100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

220221010100 is an abundant number, since it is smaller than the sum of its proper divisors (371170450924).

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

220221010100 is a wasteful number, since it uses less digits than its factorization.

220221010100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1861594 (or 1861574 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 220221010100 its reverse (1010122022), we get a palindrome (221231132122).

The spelling of 220221010100 in words is "two hundred twenty billion, two hundred twenty-one million, ten thousand, one hundred".