111213321133 has 4 divisors (see below), whose sum is σ = 111291148540. Its totient is φ = 111135493728.

The previous prime is 111213321077. The next prime is 111213321151. The reversal of 111213321133 is 331123312111.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 34452185769 + 76761135364 = 185613^2 + 277058^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-111213321133 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 (111213321533) 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, 38911560 + ... + 38914417.

It is an arithmetic number, because the mean of its divisors is an integer number (27822787135).

Almost surely, 2^111213321133 is an apocalyptic number.

It is an amenable number.

111213321133 is a deficient number, since it is larger than the sum of its proper divisors (77827407).

111213321133 is an equidigital number, since it uses as much as digits as its factorization.

111213321133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77827406.

The product of its digits is 324, while the sum is 22.

Adding to 111213321133 its reverse (331123312111), we get a palindrome (442336633244).

The spelling of 111213321133 in words is "one hundred eleven billion, two hundred thirteen million, three hundred twenty-one thousand, one hundred thirty-three".