111123133020 has 36 divisors (see below), whose sum is σ = 337073504040. Its totient is φ = 29632835424.

The previous prime is 111123133019. The next prime is 111123133039. The reversal of 111123133020 is 20331321111.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×111123133020² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 111123132984 and 111123133002.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 308675190 + ... + 308675549.

It is an arithmetic number, because the mean of its divisors is an integer number (9363152890).

Almost surely, 2^111123133020 is an apocalyptic number.

111123133020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111123133020 is an abundant number, since it is smaller than the sum of its proper divisors (225950371020).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

111123133020 is a wasteful number, since it uses less digits than its factorization.

111123133020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 617350754 (or 617350749 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

Adding to 111123133020 its reverse (20331321111), we get a palindrome (131454454131).

The spelling of 111123133020 in words is "one hundred eleven billion, one hundred twenty-three million, one hundred thirty-three thousand, twenty".