220200121220 has 24 divisors (see below), whose sum is σ = 466998677208. Its totient is φ = 87207968000.

The previous prime is 220200121217. The next prime is 220200121223. The reversal of 220200121220 is 22121002022.

It is an interprime number because it is at equal distance from previous prime (220200121217) and next prime (220200121223).

It can be written as a sum of positive squares in 4 ways, for example, as 46864456324 + 173335664896 = 216482^2 + 416336^2 .

It is a junction number, because it is equal to n+sod(n) for n = 220200121195 and 220200121204.

It is not an unprimeable number, because it can be changed into a prime (220200121223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 54502961 + ... + 54507000.

It is an arithmetic number, because the mean of its divisors is an integer number (19458278217).

Almost surely, 2^220200121220 is an apocalyptic number.

220200121220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

220200121220 is an abundant number, since it is smaller than the sum of its proper divisors (246798555988).

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

220200121220 is a wasteful number, since it uses less digits than its factorization.

220200121220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109010071 (or 109010069 counting only the distinct ones).

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

Adding to 220200121220 its reverse (22121002022), we get a palindrome (242321123242).

The spelling of 220200121220 in words is "two hundred twenty billion, two hundred million, one hundred twenty-one thousand, two hundred twenty".