220443204400 has 60 divisors (see below), whose sum is σ = 529973348632. Its totient is φ = 88117585920.

The previous prime is 220443204383. The next prime is 220443204431. The reversal of 220443204400 is 4402344022.

It is a super-2 number, since 2×220443204400² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 407392 + ... + 779008.

Almost surely, 2^220443204400 is an apocalyptic number.

220443204400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

220443204400 is an abundant number, since it is smaller than the sum of its proper divisors (309530144232).

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

220443204400 is a wasteful number, since it uses less digits than its factorization.

220443204400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 373118 (or 373107 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 25.

Adding to 220443204400 its reverse (4402344022), we get a palindrome (224845548422).

The spelling of 220443204400 in words is "two hundred twenty billion, four hundred forty-three million, two hundred four thousand, four hundred".