111225444420 has 96 divisors (see below), whose sum is σ = 316931142528. Its totient is φ = 29138706432.

The previous prime is 111225444419. The next prime is 111225444439. The reversal of 111225444420 is 24444522111.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1462372 + ... + 1536548.

It is an arithmetic number, because the mean of its divisors is an integer number (3301366068).

Almost surely, 2^111225444420 is an apocalyptic number.

111225444420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 111225444420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (158465571264).

111225444420 is an abundant number, since it is smaller than the sum of its proper divisors (205705698108).

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

111225444420 is a wasteful number, since it uses less digits than its factorization.

111225444420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74629 (or 74627 counting only the distinct ones).

The product of its (nonzero) digits is 10240, while the sum is 30.

Adding to 111225444420 its reverse (24444522111), we get a palindrome (135669966531).

The spelling of 111225444420 in words is "one hundred eleven billion, two hundred twenty-five million, four hundred forty-four thousand, four hundred twenty".