111223004520 has 64 divisors (see below), whose sum is σ = 337418136000. Its totient is φ = 29326212608.

The previous prime is 111223004489. The next prime is 111223004579. The reversal of 111223004520 is 25400322111.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 5196390 + ... + 5217749.

It is an arithmetic number, because the mean of its divisors is an integer number (5272158375).

Almost surely, 2^111223004520 is an apocalyptic number.

111223004520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111223004520 is an abundant number, since it is smaller than the sum of its proper divisors (226195131480).

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

111223004520 is a wasteful number, since it uses less digits than its factorization.

111223004520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10414242 (or 10414238 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 21.

Adding to 111223004520 its reverse (25400322111), we get a palindrome (136623326631).

The spelling of 111223004520 in words is "one hundred eleven billion, two hundred twenty-three million, four thousand, five hundred twenty".