12211311986 has 8 divisors (see below), whose sum is σ = 18439901100. Its totient is φ = 6064678288.

The previous prime is 12211311947. The next prime is 12211312019. The reversal of 12211311986 is 68911311221.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 11019750625 + 1191561361 = 104975^2 + 34519^2 .

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

It is a super-2 number, since 2×12211311986² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20488481 + ... + 20489076.

Almost surely, 2^12211311986 is an apocalyptic number.

12211311986 is a deficient number, since it is larger than the sum of its proper divisors (6228589114).

12211311986 is a wasteful number, since it uses less digits than its factorization.

12211311986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40977708.

The product of its digits is 5184, while the sum is 35.

The spelling of 12211311986 in words is "twelve billion, two hundred eleven million, three hundred eleven thousand, nine hundred eighty-six".