11916222667 has 4 divisors (see below), whose sum is σ = 11918503296. Its totient is φ = 11913942040.

The previous prime is 11916222653. The next prime is 11916222677. The reversal of 11916222667 is 76622261911.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 76622261911 = 13 ⋅5894020147.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11916222667 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11916222677) 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, 1132459 + ... + 1142932.

It is an arithmetic number, because the mean of its divisors is an integer number (2979625824).

Almost surely, 2^11916222667 is an apocalyptic number.

11916222667 is a deficient number, since it is larger than the sum of its proper divisors (2280629).

11916222667 is an equidigital number, since it uses as much as digits as its factorization.

11916222667 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2280628.

The product of its digits is 108864, while the sum is 43.

The spelling of 11916222667 in words is "eleven billion, nine hundred sixteen million, two hundred twenty-two thousand, six hundred sixty-seven".