12251300000 has 144 divisors (see below), whose sum is σ = 30471346584. Its totient is φ = 4848000000.

The previous prime is 12251299993. The next prime is 12251300051. The reversal of 12251300000 is 315221.

It is a happy number.

It can be written as a sum of positive squares in 12 ways, for example, as 5636405776 + 6614894224 = 75076^2 + 81332^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10099394 + ... + 10100606.

Almost surely, 2^12251300000 is an apocalyptic number.

12251300000 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 12251300000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15235673292).

12251300000 is an abundant number, since it is smaller than the sum of its proper divisors (18220046584).

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

12251300000 is an equidigital number, since it uses as much as digits as its factorization.

12251300000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1349 (or 1321 counting only the distinct ones).

The product of its (nonzero) digits is 60, while the sum is 14.

Adding to 12251300000 its reverse (315221), we get a palindrome (12251615221).

The spelling of 12251300000 in words is "twelve billion, two hundred fifty-one million, three hundred thousand".