111133120123 has 4 divisors (see below), whose sum is σ = 112698375408. Its totient is φ = 109567864840.

The previous prime is 111133120079. The next prime is 111133120151. The reversal of 111133120123 is 321021331111.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 321021331111 = 13 ⋅24693948547.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-111133120123 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 111133120123.

It is not an unprimeable number, because it can be changed into a prime (111133120823) 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, 782627536 + ... + 782627677.

It is an arithmetic number, because the mean of its divisors is an integer number (28174593852).

Almost surely, 2^111133120123 is an apocalyptic number.

111133120123 is a deficient number, since it is larger than the sum of its proper divisors (1565255285).

111133120123 is an equidigital number, since it uses as much as digits as its factorization.

111133120123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1565255284.

The product of its (nonzero) digits is 108, while the sum is 19.

Adding to 111133120123 its reverse (321021331111), we get a palindrome (432154451234).

The spelling of 111133120123 in words is "one hundred eleven billion, one hundred thirty-three million, one hundred twenty thousand, one hundred twenty-three".