12145312522 has 8 divisors (see below), whose sum is σ = 20820535776. Its totient is φ = 5205133932.

The previous prime is 12145312513. The next prime is 12145312537. The reversal of 12145312522 is 22521354121.

It is a happy number.

12145312522 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

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, 433761148 + ... + 433761175.

It is an arithmetic number, because the mean of its divisors is an integer number (2602566972).

Almost surely, 2^12145312522 is an apocalyptic number.

12145312522 is a deficient number, since it is larger than the sum of its proper divisors (8675223254).

12145312522 is an equidigital number, since it uses as much as digits as its factorization.

12145312522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 867522332.

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

Adding to 12145312522 its reverse (22521354121), we get a palindrome (34666666643).

The spelling of 12145312522 in words is "twelve billion, one hundred forty-five million, three hundred twelve thousand, five hundred twenty-two".