220404224331220 has 24 divisors (see below), whose sum is σ = 467620508946024. Its totient is φ = 87252806332416.

The previous prime is 220404224331209. The next prime is 220404224331223. The reversal of 220404224331220 is 22133422404022.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 1545516403344 + 218858707927876 = 1243188^2 + 14793874^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220404224331223) 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, 56805210517 + ... + 56805214396.

It is an arithmetic number, because the mean of its divisors is an integer number (19484187872751).

Almost surely, 2^{220404224331220} is an apocalyptic number.

220404224331220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

220404224331220 is an abundant number, since it is smaller than the sum of its proper divisors (247216284614804).

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

220404224331220 is a wasteful number, since it uses less digits than its factorization.

220404224331220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113610425019 (or 113610425017 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 31.

Adding to 220404224331220 its reverse (22133422404022), we get a palindrome (242537646735242).

The spelling of 220404224331220 in words is "two hundred twenty trillion, four hundred four billion, two hundred twenty-four million, three hundred thirty-one thousand, two hundred twenty".