12101611 has 4 divisors (see below), whose sum is σ = 12627792. Its totient is φ = 11575432.

The previous prime is 12101591. The next prime is 12101641. The reversal of 12101611 is 11610121.

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 12101611 - 2⁹ = 12101099 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12101591 and 12101600.

It is not an unprimeable number, because it can be changed into a prime (12101641) 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, 263056 + ... + 263101.

It is an arithmetic number, because the mean of its divisors is an integer number (3156948).

Almost surely, 2^12101611 is an apocalyptic number.

12101611 is a deficient number, since it is larger than the sum of its proper divisors (526181).

12101611 is an equidigital number, since it uses as much as digits as its factorization.

12101611 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 526180.

The product of its (nonzero) digits is 12, while the sum is 13.

The square root of 12101611 is about 3478.7369834467. The cubic root of 12101611 is about 229.5872306815.

Adding to 12101611 its reverse (11610121), we get a palindrome (23711732).

The spelling of 12101611 in words is "twelve million, one hundred one thousand, six hundred eleven".