12216071611 has 4 divisors (see below), whose sum is σ = 12334674352. Its totient is φ = 12097468872.

The previous prime is 12216071591. The next prime is 12216071629. The reversal of 12216071611 is 11617061221.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12216071611 - 2⁵ = 12216071579 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12216071611.

It is not an unprimeable number, because it can be changed into a prime (12216071671) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 59301216 + ... + 59301421.

It is an arithmetic number, because the mean of its divisors is an integer number (3083668588).

Almost surely, 2^12216071611 is an apocalyptic number.

12216071611 is a deficient number, since it is larger than the sum of its proper divisors (118602741).

12216071611 is a wasteful number, since it uses less digits than its factorization.

12216071611 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118602740.

The product of its (nonzero) digits is 1008, while the sum is 28.

The spelling of 12216071611 in words is "twelve billion, two hundred sixteen million, seventy-one thousand, six hundred eleven".