12331121986 has 8 divisors (see below), whose sum is σ = 18497171520. Its totient is φ = 6165398148.

The previous prime is 12331121981. The next prime is 12331122007. The reversal of 12331121986 is 68912113321.

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

It is a super-2 number, since 2×12331121986² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12331121981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 68275 + ... + 171241.

It is an arithmetic number, because the mean of its divisors is an integer number (2312146440).

Almost surely, 2^12331121986 is an apocalyptic number.

12331121986 is a deficient number, since it is larger than the sum of its proper divisors (6166049534).

12331121986 is a wasteful number, since it uses less digits than its factorization.

12331121986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 162848.

The product of its digits is 15552, while the sum is 37.

The spelling of 12331121986 in words is "twelve billion, three hundred thirty-one million, one hundred twenty-one thousand, nine hundred eighty-six".