111422502172 has 24 divisors (see below), whose sum is σ = 198132706800. Its totient is φ = 54820147200.

The previous prime is 111422502157. The next prime is 111422502181. The reversal of 111422502172 is 271205224111.

It is a self number, because there is not a number n which added to its sum of digits gives 111422502172.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 809829 + ... + 937372.

It is an arithmetic number, because the mean of its divisors is an integer number (8255529450).

Almost surely, 2^111422502172 is an apocalyptic number.

It is an amenable number.

111422502172 is a deficient number, since it is larger than the sum of its proper divisors (86710204628).

111422502172 is a wasteful number, since it uses less digits than its factorization.

111422502172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1747461 (or 1747459 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 28.

Adding to 111422502172 its reverse (271205224111), we get a palindrome (382627726283).

The spelling of 111422502172 in words is "one hundred eleven billion, four hundred twenty-two million, five hundred two thousand, one hundred seventy-two".