12011132311 has 8 divisors (see below), whose sum is σ = 12514466304. Its totient is φ = 11515040760.

The previous prime is 12011132303. The next prime is 12011132317. The reversal of 12011132311 is 11323111021.

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 12011132311 - 2³ = 12011132303 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 (12011132317) 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, 1807225 + ... + 1813858.

It is an arithmetic number, because the mean of its divisors is an integer number (1564308288).

Almost surely, 2^12011132311 is an apocalyptic number.

12011132311 is a deficient number, since it is larger than the sum of its proper divisors (503333993).

12011132311 is a wasteful number, since it uses less digits than its factorization.

12011132311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3621221.

The product of its (nonzero) digits is 36, while the sum is 16.

Adding to 12011132311 its reverse (11323111021), we get a palindrome (23334243332).

The spelling of 12011132311 in words is "twelve billion, eleven million, one hundred thirty-two thousand, three hundred eleven".