12122011115 has 16 divisors (see below), whose sum is σ = 15373048320. Its totient is φ = 9150588000.

The previous prime is 12122011093. The next prime is 12122011117. The reversal of 12122011115 is 51111022121.

It is not a de Polignac number, because 12122011115 - 2⁶ = 12122011051 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12122011093 and 12122011102.

It is not an unprimeable number, because it can be changed into a prime (12122011117) 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, 230339 + ... + 278028.

It is an arithmetic number, because the mean of its divisors is an integer number (960815520).

Almost surely, 2^12122011115 is an apocalyptic number.

12122011115 is a deficient number, since it is larger than the sum of its proper divisors (3251037205).

12122011115 is a wasteful number, since it uses less digits than its factorization.

12122011115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 508642.

The product of its (nonzero) digits is 40, while the sum is 17.

Adding to 12122011115 its reverse (51111022121), we get a palindrome (63233033236).

The spelling of 12122011115 in words is "twelve billion, one hundred twenty-two million, eleven thousand, one hundred fifteen".