111212420012384 has 96 divisors (see below), whose sum is σ = 234644914094976. Its totient is φ = 51699650529280.

The previous prime is 111212420012357. The next prime is 111212420012387. The reversal of 111212420012384 is 483210024212111.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a self number, because there is not a number n which added to its sum of digits gives 111212420012384.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111212420012387) by changing a digit.

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, 482604839 + ... + 482835225.

It is an arithmetic number, because the mean of its divisors is an integer number (2444217855156).

Almost surely, 2^{111212420012384} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 111212420012384, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (117322457047488).

111212420012384 is an abundant number, since it is smaller than the sum of its proper divisors (123432494082592).

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

111212420012384 is a wasteful number, since it uses less digits than its factorization.

111212420012384 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 241188 (or 241180 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 32.

Adding to 111212420012384 its reverse (483210024212111), we get a palindrome (594422444224495).

The spelling of 111212420012384 in words is "one hundred eleven trillion, two hundred twelve billion, four hundred twenty million, twelve thousand, three hundred eighty-four".