220012031320 has 64 divisors (see below), whose sum is σ = 506752070400. Its totient is φ = 85940131200.

The previous prime is 220012031311. The next prime is 220012031321. The reversal of 220012031320 is 23130210022.

It is a junction number, because it is equal to n+sod(n) for n = 220012031294 and 220012031303.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220012031321) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 47667 + ... + 665053.

It is an arithmetic number, because the mean of its divisors is an integer number (7918001100).

Almost surely, 2^220012031320 is an apocalyptic number.

220012031320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 220012031320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (253376035200).

220012031320 is an abundant number, since it is smaller than the sum of its proper divisors (286740039080).

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

220012031320 is a wasteful number, since it uses less digits than its factorization.

220012031320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 617608 (or 617604 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

Adding to 220012031320 its reverse (23130210022), we get a palindrome (243142241342).

The spelling of 220012031320 in words is "two hundred twenty billion, twelve million, thirty-one thousand, three hundred twenty".