220071720020 has 24 divisors (see below), whose sum is σ = 462366559368. Its totient is φ = 87987555200.

The previous prime is 220071720013. The next prime is 220071720031. The reversal of 220071720020 is 20027170022.

It can be written as a sum of positive squares in 4 ways, for example, as 86184519184 + 133887200836 = 293572^2 + 365906^2 .

It is a super-2 number, since 2×220071720020² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2526911 + ... + 2612550.

It is an arithmetic number, because the mean of its divisors is an integer number (19265273307).

Almost surely, 2^220071720020 is an apocalyptic number.

220071720020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

220071720020 is an abundant number, since it is smaller than the sum of its proper divisors (242294839348).

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

220071720020 is a wasteful number, since it uses less digits than its factorization.

220071720020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5141611 (or 5141609 counting only the distinct ones).

The product of its (nonzero) digits is 784, while the sum is 23.

Adding to 220071720020 its reverse (20027170022), we get a palindrome (240098890042).

The spelling of 220071720020 in words is "two hundred twenty billion, seventy-one million, seven hundred twenty thousand, twenty".