111001055500 has 48 divisors (see below), whose sum is σ = 243765875808. Its totient is φ = 44155080000.

The previous prime is 111001055489. The next prime is 111001055507. The reversal of 111001055500 is 5550100111.

It is a happy number.

It is a super-2 number, since 2×111001055500² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (111001055507) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 522766 + ... + 703765.

It is an arithmetic number, because the mean of its divisors is an integer number (5078455746).

Almost surely, 2^111001055500 is an apocalyptic number.

111001055500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111001055500 is an abundant number, since it is smaller than the sum of its proper divisors (132764820308).

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

111001055500 is a wasteful number, since it uses less digits than its factorization.

111001055500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1226731 (or 1226719 counting only the distinct ones).

The product of its (nonzero) digits is 125, while the sum is 19.

Adding to 111001055500 its reverse (5550100111), we get a palindrome (116551155611).

The spelling of 111001055500 in words is "one hundred eleven billion, one million, fifty-five thousand, five hundred".