220020100221 has 32 divisors (see below), whose sum is σ = 299909495808. Its totient is φ = 143440734080.

The previous prime is 220020100213. The next prime is 220020100247. The reversal of 220020100221 is 122001020022.

It is a cyclic number.

It is not a de Polignac number, because 220020100221 - 2³ = 220020100213 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 220020100197 and 220020100206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220020100211) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 48642466 + ... + 48646988.

It is an arithmetic number, because the mean of its divisors is an integer number (9372171744).

Almost surely, 2^220020100221 is an apocalyptic number.

It is an amenable number.

220020100221 is a deficient number, since it is larger than the sum of its proper divisors (79889395587).

220020100221 is a wasteful number, since it uses less digits than its factorization.

220020100221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6401.

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

Adding to 220020100221 its reverse (122001020022), we get a palindrome (342021120243).

The spelling of 220020100221 in words is "two hundred twenty billion, twenty million, one hundred thousand, two hundred twenty-one".