520222120 has 64 divisors (see below), whose sum is σ = 1288742400. Its totient is φ = 187418880.

The previous prime is 520222111. The next prime is 520222121. The reversal of 520222120 is 21222025.

It is a junction number, because it is equal to n+sod(n) for n = 520222094 and 520222103.

It is not an unprimeable number, because it can be changed into a prime (520222121) 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, 42537 + ... + 53383.

It is an arithmetic number, because the mean of its divisors is an integer number (20136600).

Almost surely, 2^520222120 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 520222120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (644371200).

520222120 is an abundant number, since it is smaller than the sum of its proper divisors (768520280).

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

520222120 is a wasteful number, since it uses less digits than its factorization.

520222120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10978 (or 10974 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 16.

The square root of 520222120 is about 22808.3782851828. The cubic root of 520222120 is about 804.2596333171.

Adding to 520222120 its reverse (21222025), we get a palindrome (541444145).

The spelling of 520222120 in words is "five hundred twenty million, two hundred twenty-two thousand, one hundred twenty".