12222000520 has 32 divisors (see below), whose sum is σ = 27522506520. Its totient is φ = 4884710400.

The previous prime is 12222000487. The next prime is 12222000533. The reversal of 12222000520 is 2500022221.

It can be written as a sum of positive squares in 4 ways, for example, as 4182726276 + 8039274244 = 64674^2 + 89662^2 .

It is a junction number, because it is equal to n+sod(n) for n = 12222000494 and 12222000503.

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, 79167 + ... + 175246.

Almost surely, 2^12222000520 is an apocalyptic number.

12222000520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12222000520 is an abundant number, since it is smaller than the sum of its proper divisors (15300506000).

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

12222000520 is a wasteful number, since it uses less digits than its factorization.

12222000520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 255625 (or 255621 counting only the distinct ones).

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

Adding to 12222000520 its reverse (2500022221), we get a palindrome (14722022741).

The spelling of 12222000520 in words is "twelve billion, two hundred twenty-two million, five hundred twenty", and thus it is an aban number.