220243442220 has 72 divisors (see below), whose sum is σ = 668954714064. Its totient is φ = 58653963648.

The previous prime is 220243442207. The next prime is 220243442227. The reversal of 220243442220 is 22244342022.

220243442220 is a `hidden beast` number, since 2 + 2 + 0 + 2 + 434 + 4 + 2 + 220 = 666.

It is not an unprimeable number, because it can be changed into a prime (220243442227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 671914 + ... + 944433.

Almost surely, 2^220243442220 is an apocalyptic number.

220243442220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

220243442220 is an abundant number, since it is smaller than the sum of its proper divisors (448711271844).

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

220243442220 is a wasteful number, since it uses less digits than its factorization.

220243442220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1617119 (or 1617114 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 27.

Adding to 220243442220 its reverse (22244342022), we get a palindrome (242487784242).

The spelling of 220243442220 in words is "two hundred twenty billion, two hundred forty-three million, four hundred forty-two thousand, two hundred twenty".