11211213311 has 8 divisors (see below), whose sum is σ = 11787963264. Its totient is φ = 10641905560.

The previous prime is 11211213281. The next prime is 11211213317. The reversal of 11211213311 is 11331211211.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11211213311 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11211213311.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11211213317) 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, 1857461 + ... + 1863486.

It is an arithmetic number, because the mean of its divisors is an integer number (1473495408).

Almost surely, 2^11211213311 is an apocalyptic number.

11211213311 is a deficient number, since it is larger than the sum of its proper divisors (576749953).

11211213311 is a wasteful number, since it uses less digits than its factorization.

11211213311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3721101.

The product of its digits is 36, while the sum is 17.

Adding to 11211213311 its reverse (11331211211), we get a palindrome (22542424522).

The spelling of 11211213311 in words is "eleven billion, two hundred eleven million, two hundred thirteen thousand, three hundred eleven".