12522320000 has 160 divisors (see below), whose sum is σ = 31403557020. Its totient is φ = 4972032000.

The previous prime is 12522319993. The next prime is 12522320009. The reversal of 12522320000 is 2322521.

It can be written as a sum of positive squares in 10 ways, for example, as 441672256 + 12080647744 = 21016^2 + 109912^2 .

It is a tau number, because it is divible by the number of its divisors (160).

It is not an unprimeable number, because it can be changed into a prime (12522320009) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 12559502 + ... + 12560498.

Almost surely, 2^12522320000 is an apocalyptic number.

12522320000 is a gapful number since it is divisible by the number (10) 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 12522320000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15701778510).

12522320000 is an abundant number, since it is smaller than the sum of its proper divisors (18881237020).

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

12522320000 is an frugal number, since it uses more digits than its factorization.

12522320000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1188 (or 1161 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 17.

Adding to 12522320000 its reverse (2322521), we get a palindrome (12524642521).

The spelling of 12522320000 in words is "twelve billion, five hundred twenty-two million, three hundred twenty thousand".