220220004400 has 120 divisors (see below), whose sum is σ = 602271523584. Its totient is φ = 76598227200.

The previous prime is 220220004371. The next prime is 220220004409. The reversal of 220220004400 is 4400022022.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is not an unprimeable number, because it can be changed into a prime (220220004409) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 986844 + ... + 1189243.

Almost surely, 2^220220004400 is an apocalyptic number.

220220004400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

220220004400 is an abundant number, since it is smaller than the sum of its proper divisors (382051519184).

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

220220004400 is a wasteful number, since it uses less digits than its factorization.

220220004400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2176139 (or 2176128 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 16.

Adding to 220220004400 its reverse (4400022022), we get a palindrome (224620026422).

The spelling of 220220004400 in words is "two hundred twenty billion, two hundred twenty million, four thousand, four hundred".