12142221986 has 8 divisors (see below), whose sum is σ = 18220039680. Its totient is φ = 6068875428.

The previous prime is 12142221941. The next prime is 12142221989. The reversal of 12142221986 is 68912224121.

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

It is not an unprimeable number, because it can be changed into a prime (12142221989) 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 3 ways as a sum of consecutive naturals, for example, 1110986 + ... + 1121861.

It is an arithmetic number, because the mean of its divisors is an integer number (2277504960).

Almost surely, 2^12142221986 is an apocalyptic number.

12142221986 is a deficient number, since it is larger than the sum of its proper divisors (6077817694).

12142221986 is a wasteful number, since it uses less digits than its factorization.

12142221986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2235568.

The product of its digits is 27648, while the sum is 38.

The spelling of 12142221986 in words is "twelve billion, one hundred forty-two million, two hundred twenty-one thousand, nine hundred eighty-six".