220100201220 has 144 divisors (see below), whose sum is σ = 663416417664. Its totient is φ = 54334310400.

The previous prime is 220100201207. The next prime is 220100201227. The reversal of 220100201220 is 22102001022.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 220100201196 and 220100201205.

It is not an unprimeable number, because it can be changed into a prime (220100201227) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3766425 + ... + 3824415.

It is an arithmetic number, because the mean of its divisors is an integer number (4607058456).

Almost surely, 2^220100201220 is an apocalyptic number.

220100201220 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 220100201220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (331708208832).

220100201220 is an abundant number, since it is smaller than the sum of its proper divisors (443316216444).

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

220100201220 is a wasteful number, since it uses less digits than its factorization.

220100201220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58142 (or 58079 counting only the distinct ones).

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

Adding to 220100201220 its reverse (22102001022), we get a palindrome (242202202242).

The spelling of 220100201220 in words is "two hundred twenty billion, one hundred million, two hundred one thousand, two hundred twenty".