111123133011 has 160 divisors (see below), whose sum is σ = 196882488000. Its totient is φ = 61705912320.

The previous prime is 111123132961. The next prime is 111123133019. The reversal of 111123133011 is 110331321111.

It is not a de Polignac number, because 111123133011 - 2²¹ = 111121035859 is a prime.

It is a super-2 number, since 2×111123133011² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (111123133019) by changing a digit.

It is a polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 119615395 + ... + 119616323.

It is an arithmetic number, because the mean of its divisors is an integer number (1230515550).

Almost surely, 2^111123133011 is an apocalyptic number.

111123133011 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

111123133011 is a deficient number, since it is larger than the sum of its proper divisors (85759354989).

111123133011 is a wasteful number, since it uses less digits than its factorization.

111123133011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1171 (or 1162 counting only the distinct ones).

The product of its (nonzero) digits is 54, while the sum is 18.

Adding to 111123133011 its reverse (110331321111), we get a palindrome (221454454122).

The spelling of 111123133011 in words is "one hundred eleven billion, one hundred twenty-three million, one hundred thirty-three thousand, eleven".