11197679111 has 4 divisors (see below), whose sum is σ = 11198285400. Its totient is φ = 11197072824.

The previous prime is 11197679107. The next prime is 11197679117.

It is a happy number.

11197679111 is nontrivially palindromic in base 10.

11197679111 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 11197679111 - 2² = 11197679107 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11197679117) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 274541 + ... + 312678.

It is an arithmetic number, because the mean of its divisors is an integer number (2799571350).

Almost surely, 2^11197679111 is an apocalyptic number.

11197679111 is a deficient number, since it is larger than the sum of its proper divisors (606289).

11197679111 is an equidigital number, since it uses as much as digits as its factorization.

11197679111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 606288.

The product of its digits is 23814, while the sum is 44.

The spelling of 11197679111 in words is "eleven billion, one hundred ninety-seven million, six hundred seventy-nine thousand, one hundred eleven".