11216353181 has 4 divisors (see below), whose sum is σ = 12236021664. Its totient is φ = 10196684700.

The previous prime is 11216353063. The next prime is 11216353193. The reversal of 11216353181 is 18135361211.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 11216353181 - 2³⁰ = 10142611357 is a prime.

It is a super-2 number, since 2×11216353181² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11216353781) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 509834225 + ... + 509834246.

It is an arithmetic number, because the mean of its divisors is an integer number (3059005416).

Almost surely, 2^11216353181 is an apocalyptic number.

11216353181 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

11216353181 is a deficient number, since it is larger than the sum of its proper divisors (1019668483).

11216353181 is a wasteful number, since it uses less digits than its factorization.

11216353181 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1019668482.

The product of its digits is 4320, while the sum is 32.

The spelling of 11216353181 in words is "eleven billion, two hundred sixteen million, three hundred fifty-three thousand, one hundred eighty-one".