11213133111 has 12 divisors (see below), whose sum is σ = 16197784720. Its totient is φ = 7474943520.

The previous prime is 11213133103. The next prime is 11213133131. The reversal of 11213133111 is 11133131211.

It is not a de Polignac number, because 11213133111 - 2³ = 11213133103 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 (11213133131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 162651 + ... + 221091.

Almost surely, 2^11213133111 is an apocalyptic number.

11213133111 is a deficient number, since it is larger than the sum of its proper divisors (4984651609).

11213133111 is a wasteful number, since it uses less digits than its factorization.

11213133111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79766 (or 79763 counting only the distinct ones).

The product of its digits is 54, while the sum is 18.

Adding to 11213133111 its reverse (11133131211), we get a palindrome (22346264322).

The spelling of 11213133111 in words is "eleven billion, two hundred thirteen million, one hundred thirty-three thousand, one hundred eleven".