111131111223012 has 48 divisors (see below), whose sum is σ = 263930250987200. Its totient is φ = 36386254346112.

The previous prime is 111131111222981. The next prime is 111131111223019. The reversal of 111131111223012 is 210322111131111.

It is a super-2 number, since 2×111131111223012² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 111131111223012.

It is not an unprimeable number, because it can be changed into a prime (111131111223019) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 197746303 + ... + 198307494.

Almost surely, 2^{111131111223012} is an apocalyptic number.

111131111223012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

111131111223012 is an abundant number, since it is smaller than the sum of its proper divisors (152799139764188).

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

111131111223012 is a wasteful number, since it uses less digits than its factorization.

111131111223012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 396054220 (or 396054218 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 21.

Adding to 111131111223012 its reverse (210322111131111), we get a palindrome (321453222354123).

The spelling of 111131111223012 in words is "one hundred eleven trillion, one hundred thirty-one billion, one hundred eleven million, two hundred twenty-three thousand, twelve".