111222001123 has 4 divisors (see below), whose sum is σ = 111262404168. Its totient is φ = 111181598080.

The previous prime is 111222001109. The next prime is 111222001133. The reversal of 111222001123 is 321100222111.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 321100222111 = 31 ⋅10358071681.

It is a cyclic number.

It is not a de Polignac number, because 111222001123 - 2⁵ = 111222001091 is a prime.

It is a super-2 number, since 2×111222001123² (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 = 111222001097 and 111222001106.

It is not an unprimeable number, because it can be changed into a prime (111222001103) 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, 20197393 + ... + 20202898.

It is an arithmetic number, because the mean of its divisors is an integer number (27815601042).

Almost surely, 2^111222001123 is an apocalyptic number.

111222001123 is a deficient number, since it is larger than the sum of its proper divisors (40403045).

111222001123 is an equidigital number, since it uses as much as digits as its factorization.

111222001123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40403044.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 111222001123 its reverse (321100222111), we get a palindrome (432322223234).

The spelling of 111222001123 in words is "one hundred eleven billion, two hundred twenty-two million, one thousand, one hundred twenty-three".