111522144012 has 24 divisors (see below), whose sum is σ = 260735682816. Its totient is φ = 37100141328.

The previous prime is 111522144007. The next prime is 111522144043. The reversal of 111522144012 is 210441225111.

It is a super-2 number, since 2×111522144012² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9232048 + ... + 9244119.

It is an arithmetic number, because the mean of its divisors is an integer number (10863986784).

Almost surely, 2^111522144012 is an apocalyptic number.

111522144012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

111522144012 is an abundant number, since it is smaller than the sum of its proper divisors (149213538804).

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

111522144012 is a wasteful number, since it uses less digits than its factorization.

111522144012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18476677 (or 18476675 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 24.

Adding to 111522144012 its reverse (210441225111), we get a palindrome (321963369123).

The spelling of 111522144012 in words is "one hundred eleven billion, five hundred twenty-two million, one hundred forty-four thousand, twelve".