111220243124 has 6 divisors (see below), whose sum is σ = 194635425474. Its totient is φ = 55610121560.

The previous prime is 111220243103. The next prime is 111220243159. The reversal of 111220243124 is 421342022111.

111220243124 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 109837890724 + 1382352400 = 331418^2 + 37180^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 111220243124.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13902530387 + ... + 13902530394.

It is an arithmetic number, because the mean of its divisors is an integer number (32439237579).

Almost surely, 2^111220243124 is an apocalyptic number.

It is an amenable number.

111220243124 is a deficient number, since it is larger than the sum of its proper divisors (83415182350).

111220243124 is a wasteful number, since it uses less digits than its factorization.

111220243124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27805060785 (or 27805060783 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 23.

Adding to 111220243124 its reverse (421342022111), we get a palindrome (532562265235).

The spelling of 111220243124 in words is "one hundred eleven billion, two hundred twenty million, two hundred forty-three thousand, one hundred twenty-four".