111223123331 has 4 divisors (see below), whose sum is σ = 111349370664. Its totient is φ = 111096876000.

The previous prime is 111223123313. The next prime is 111223123411. The reversal of 111223123331 is 133321322111.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 133321322111 = 21157 ⋅6301523.

It is a cyclic number.

It is not a de Polignac number, because 111223123331 - 2¹⁴ = 111223106947 is a prime.

It is a super-2 number, since 2×111223123331² (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 = 111223123297 and 111223123306.

It is not an unprimeable number, because it can be changed into a prime (111223123031) 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 3 ways as a sum of consecutive naturals, for example, 63122345 + ... + 63124106.

It is an arithmetic number, because the mean of its divisors is an integer number (27837342666).

Almost surely, 2^111223123331 is an apocalyptic number.

111223123331 is a deficient number, since it is larger than the sum of its proper divisors (126247333).

111223123331 is an equidigital number, since it uses as much as digits as its factorization.

111223123331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126247332.

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

Adding to 111223123331 its reverse (133321322111), we get a palindrome (244544445442).

The spelling of 111223123331 in words is "one hundred eleven billion, two hundred twenty-three million, one hundred twenty-three thousand, three hundred thirty-one".