12187300722 has 48 divisors (see below), whose sum is σ = 25103131200. Its totient is φ = 3944446272.

The previous prime is 12187300669. The next prime is 12187300753. The reversal of 12187300722 is 22700378121.

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, 4918948 + ... + 4921424.

It is an arithmetic number, because the mean of its divisors is an integer number (522981900).

Almost surely, 2^12187300722 is an apocalyptic number.

12187300722 is an abundant number, since it is smaller than the sum of its proper divisors (12915830478).

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

12187300722 is a wasteful number, since it uses less digits than its factorization.

12187300722 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3155 (or 3118 counting only the distinct ones).

The product of its (nonzero) digits is 9408, while the sum is 33.

Adding to 12187300722 its reverse (22700378121), we get a palindrome (34887678843).

The spelling of 12187300722 in words is "twelve billion, one hundred eighty-seven million, three hundred thousand, seven hundred twenty-two".