12185210111 has 8 divisors (see below), whose sum is σ = 12946077120. Its totient is φ = 11447055648.

The previous prime is 12185210047. The next prime is 12185210129. The reversal of 12185210111 is 11101258121.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 12185210111 - 2⁶ = 12185210047 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 (12185210161) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5677031 + ... + 5679176.

It is an arithmetic number, because the mean of its divisors is an integer number (1618259640).

Almost surely, 2^12185210111 is an apocalyptic number.

12185210111 is a deficient number, since it is larger than the sum of its proper divisors (760867009).

12185210111 is a wasteful number, since it uses less digits than its factorization.

12185210111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11356273.

The product of its (nonzero) digits is 160, while the sum is 23.

Adding to 12185210111 its reverse (11101258121), we get a palindrome (23286468232).

The spelling of 12185210111 in words is "twelve billion, one hundred eighty-five million, two hundred ten thousand, one hundred eleven".