12251241636 has 12 divisors (see below), whose sum is σ = 28586230512. Its totient is φ = 4083747208.

The previous prime is 12251241619. The next prime is 12251241637. The reversal of 12251241636 is 63614215221.

12251241636 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 12251241597 and 12251241606.

It is not an unprimeable number, because it can be changed into a prime (12251241637) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 510468390 + ... + 510468413.

It is an arithmetic number, because the mean of its divisors is an integer number (2382185876).

Almost surely, 2^12251241636 is an apocalyptic number.

It is an amenable number.

12251241636 is an abundant number, since it is smaller than the sum of its proper divisors (16334988876).

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

12251241636 is a wasteful number, since it uses less digits than its factorization.

12251241636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1020936810 (or 1020936808 counting only the distinct ones).

The product of its digits is 17280, while the sum is 33.

Adding to 12251241636 its reverse (63614215221), we get a palindrome (75865456857).

The spelling of 12251241636 in words is "twelve billion, two hundred fifty-one million, two hundred forty-one thousand, six hundred thirty-six".