220520812512 has 192 divisors, whose sum is σ = 777220545024. Its totient is φ = 52872099840.

The previous prime is 220520812493. The next prime is 220520812513. The reversal of 220520812512 is 215218025022.

220520812512 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 220520812512.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220520812513) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1051303 + ... + 1243494.

It is an arithmetic number, because the mean of its divisors is an integer number (4048023672).

Almost surely, 2^220520812512 is an apocalyptic number.

220520812512 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

220520812512 is an abundant number, since it is smaller than the sum of its proper divisors (556699732512).

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

220520812512 is a wasteful number, since it uses less digits than its factorization.

220520812512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2294841 (or 2294833 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 30.

Adding to 220520812512 its reverse (215218025022), we get a palindrome (435738837534).

The spelling of 220520812512 in words is "two hundred twenty billion, five hundred twenty million, eight hundred twelve thousand, five hundred twelve".