111312223133 has 4 divisors (see below), whose sum is σ = 111798302940. Its totient is φ = 110826143328.

The previous prime is 111312223129. The next prime is 111312223153. The reversal of 111312223133 is 331322213111.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 331322213111 = 317 ⋅1045180483.

It can be written as a sum of positive squares in 2 ways, for example, as 43273152484 + 68039070649 = 208022^2 + 260843^2 .

It is a cyclic number.

It is not a de Polignac number, because 111312223133 - 2² = 111312223129 is a prime.

It is a super-2 number, since 2×111312223133² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 111312223099 and 111312223108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111312223103) 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, 243039560 + ... + 243040017.

It is an arithmetic number, because the mean of its divisors is an integer number (27949575735).

Almost surely, 2^111312223133 is an apocalyptic number.

It is an amenable number.

111312223133 is a deficient number, since it is larger than the sum of its proper divisors (486079807).

111312223133 is an equidigital number, since it uses as much as digits as its factorization.

111312223133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 486079806.

The product of its digits is 648, while the sum is 23.

Adding to 111312223133 its reverse (331322213111), we get a palindrome (442634436244).

The spelling of 111312223133 in words is "one hundred eleven billion, three hundred twelve million, two hundred twenty-three thousand, one hundred thirty-three".