11222113511 has 16 divisors (see below), whose sum is σ = 12906639360. Its totient is φ = 9558042720.

The previous prime is 11222113489. The next prime is 11222113537. The reversal of 11222113511 is 11531122211.

It is a cyclic number.

It is not a de Polignac number, because 11222113511 - 2⁶ = 11222113447 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 (11222113561) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1358285 + ... + 1366521.

It is an arithmetic number, because the mean of its divisors is an integer number (806664960).

Almost surely, 2^11222113511 is an apocalyptic number.

11222113511 is a deficient number, since it is larger than the sum of its proper divisors (1684525849).

11222113511 is a wasteful number, since it uses less digits than its factorization.

11222113511 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9454.

The product of its digits is 120, while the sum is 20.

Adding to 11222113511 its reverse (11531122211), we get a palindrome (22753235722).

The spelling of 11222113511 in words is "eleven billion, two hundred twenty-two million, one hundred thirteen thousand, five hundred eleven".