220122100220 has 96 divisors (see below), whose sum is σ = 513438137856. Its totient is φ = 78595257600.

The previous prime is 220122100189. The next prime is 220122100223. The reversal of 220122100220 is 22001221022.

It is a junction number, because it is equal to n+sod(n) for n = 220122100195 and 220122100204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220122100223) 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, 7863569 + ... + 7891511.

It is an arithmetic number, because the mean of its divisors is an integer number (5348313936).

Almost surely, 2^220122100220 is an apocalyptic number.

220122100220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 220122100220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (256719068928).

220122100220 is an abundant number, since it is smaller than the sum of its proper divisors (293316037636).

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

220122100220 is a wasteful number, since it uses less digits than its factorization.

220122100220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28611 (or 28609 counting only the distinct ones).

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

Adding to 220122100220 its reverse (22001221022), we get a palindrome (242123321242).

It can be divided in two parts, 2201221002 and 20, that added together give a palindrome (2201221022).

The spelling of 220122100220 in words is "two hundred twenty billion, one hundred twenty-two million, one hundred thousand, two hundred twenty".