512022561220 has 12 divisors (see below), whose sum is σ = 1075247378604. Its totient is φ = 204809024480.

The previous prime is 512022561187. The next prime is 512022561251. The reversal of 512022561220 is 22165220215.

It can be written as a sum of positive squares in 2 ways, for example, as 358966343044 + 153056218176 = 599138^2 + 391224^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12800564011 + ... + 12800564050.

It is an arithmetic number, because the mean of its divisors is an integer number (89603948217).

Almost surely, 2^512022561220 is an apocalyptic number.

It is an amenable number.

512022561220 is an abundant number, since it is smaller than the sum of its proper divisors (563224817384).

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

512022561220 is a wasteful number, since it uses less digits than its factorization.

512022561220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25601128070 (or 25601128068 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 28.

Adding to 512022561220 its reverse (22165220215), we get a palindrome (534187781435).

The spelling of 512022561220 in words is "five hundred twelve billion, twenty-two million, five hundred sixty-one thousand, two hundred twenty".