11231213211 has 24 divisors (see below), whose sum is σ = 16702258560. Its totient is φ = 7267211136.

The previous prime is 11231213207. The next prime is 11231213221.

11231213211 is a `hidden beast` number, since 11 + 231 + 213 + 211 = 666.

11231213211 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 11231213211 - 2² = 11231213207 is a prime.

It is a super-2 number, since 2×11231213211² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (11231213221) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 94966 + ... + 177428.

It is an arithmetic number, because the mean of its divisors is an integer number (695927440).

Almost surely, 2^11231213211 is an apocalyptic number.

11231213211 is a deficient number, since it is larger than the sum of its proper divisors (5471045349).

11231213211 is a wasteful number, since it uses less digits than its factorization.

11231213211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82915 (or 82912 counting only the distinct ones).

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

The spelling of 11231213211 in words is "eleven billion, two hundred thirty-one million, two hundred thirteen thousand, two hundred eleven".