12111101 has 8 divisors (see below), whose sum is σ = 12472320. Its totient is φ = 11754288.

The previous prime is 12111097. The next prime is 12111103. The reversal of 12111101 is 10111121.

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 12111101 - 2² = 12111097 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 (12111103) 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, 4955 + ... + 6983.

It is an arithmetic number, because the mean of its divisors is an integer number (1559040).

Almost surely, 2^12111101 is an apocalyptic number.

It is an amenable number.

12111101 is a deficient number, since it is larger than the sum of its proper divisors (361219).

12111101 is a wasteful number, since it uses less digits than its factorization.

12111101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2203.

The product of its (nonzero) digits is 2, while the sum is 8.

The square root of 12111101 is about 3480.1007169333. The cubic root of 12111101 is about 229.6472285760.

Adding to 12111101 its reverse (10111121), we get a palindrome (22222222).

The spelling of 12111101 in words is "twelve million, one hundred eleven thousand, one hundred one".