12105401611 has 4 divisors (see below), whose sum is σ = 12106853352. Its totient is φ = 12103949872.

The previous prime is 12105401603. The next prime is 12105401669. The reversal of 12105401611 is 11610450121.

It is a happy number.

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 12105401611 - 2³ = 12105401603 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12105401681) 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, 713290 + ... + 730063.

It is an arithmetic number, because the mean of its divisors is an integer number (3026713338).

Almost surely, 2^12105401611 is an apocalyptic number.

12105401611 is a deficient number, since it is larger than the sum of its proper divisors (1451741).

12105401611 is an equidigital number, since it uses as much as digits as its factorization.

12105401611 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1451740.

The product of its (nonzero) digits is 240, while the sum is 22.

Adding to 12105401611 its reverse (11610450121), we get a palindrome (23715851732).

The spelling of 12105401611 in words is "twelve billion, one hundred five million, four hundred one thousand, six hundred eleven".