12011101111311 has 4 divisors (see below), whose sum is σ = 16014801481752. Its totient is φ = 8007400740872.

The previous prime is 12011101111307. The next prime is 12011101111369. The reversal of 12011101111311 is 11311110111021.

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 12011101111311 - 2² = 12011101111307 is a prime.

It is a super-2 number, since 2×12011101111311² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12011101111811) 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, 2001850185216 + ... + 2001850185221.

It is an arithmetic number, because the mean of its divisors is an integer number (4003700370438).

Almost surely, 2^{12011101111311} is an apocalyptic number.

12011101111311 is a deficient number, since it is larger than the sum of its proper divisors (4003700370441).

12011101111311 is an equidigital number, since it uses as much as digits as its factorization.

12011101111311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4003700370440.

The product of its (nonzero) digits is 6, while the sum is 15.

Adding to 12011101111311 its reverse (11311110111021), we get a palindrome (23322211222332).

The spelling of 12011101111311 in words is "twelve trillion, eleven billion, one hundred one million, one hundred eleven thousand, three hundred eleven".