11321212311 has 12 divisors (see below), whose sum is σ = 16514773080. Its totient is φ = 7472746800.

The previous prime is 11321212303. The next prime is 11321212363.

11321212311 is a `hidden beast` number, since 11 + 321 + 21 + 2 + 311 = 666.

11321212311 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 11321212311 - 2³ = 11321212303 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11321212391) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6226381 + ... + 6228198.

It is an arithmetic number, because the mean of its divisors is an integer number (1376231090).

Almost surely, 2^11321212311 is an apocalyptic number.

11321212311 is a deficient number, since it is larger than the sum of its proper divisors (5193560769).

11321212311 is a wasteful number, since it uses less digits than its factorization.

11321212311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12454686 (or 12454683 counting only the distinct ones).

The product of its digits is 72, while the sum is 18.

The spelling of 11321212311 in words is "eleven billion, three hundred twenty-one million, two hundred twelve thousand, three hundred eleven".