12072001266 has 32 divisors (see below), whose sum is σ = 28890261120. Its totient is φ = 3714461712.

The previous prime is 12072001261. The next prime is 12072001267. The reversal of 12072001266 is 66210027021.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (12072001261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8597590 + ... + 8598993.

It is an arithmetic number, because the mean of its divisors is an integer number (902820660).

Almost surely, 2^12072001266 is an apocalyptic number.

12072001266 is an abundant number, since it is smaller than the sum of its proper divisors (16818259854).

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

12072001266 is a wasteful number, since it uses less digits than its factorization.

12072001266 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17196607 (or 17196601 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 27.

Adding to 12072001266 its reverse (66210027021), we get a palindrome (78282028287).

The spelling of 12072001266 in words is "twelve billion, seventy-two million, one thousand, two hundred sixty-six".