12122017887 has 16 divisors (see below), whose sum is σ = 18473702400. Its totient is φ = 6926096352.

The previous prime is 12122017867. The next prime is 12122017889. The reversal of 12122017887 is 78871022121.

12122017887 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12122017887 - 2⁷ = 12122017759 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12122017889) 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 15 ways as a sum of consecutive naturals, for example, 200053 + ... + 253505.

It is an arithmetic number, because the mean of its divisors is an integer number (1154606400).

Almost surely, 2^12122017887 is an apocalyptic number.

12122017887 is a deficient number, since it is larger than the sum of its proper divisors (6351684513).

12122017887 is a wasteful number, since it uses less digits than its factorization.

12122017887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64262.

The product of its (nonzero) digits is 25088, while the sum is 39.

The spelling of 12122017887 in words is "twelve billion, one hundred twenty-two million, seventeen thousand, eight hundred eighty-seven".