111144224420 has 48 divisors (see below), whose sum is σ = 235832688000. Its totient is φ = 43995469056.

The previous prime is 111144224413. The next prime is 111144224431. The reversal of 111144224420 is 24422441111.

It is a self number, because there is not a number n which added to its sum of digits gives 111144224420.

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 15 ways as a sum of consecutive naturals, for example, 3069944 + ... + 3105936.

It is an arithmetic number, because the mean of its divisors is an integer number (4913181000).

Almost surely, 2^111144224420 is an apocalyptic number.

111144224420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111144224420 is an abundant number, since it is smaller than the sum of its proper divisors (124688463580).

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

111144224420 is a wasteful number, since it uses less digits than its factorization.

111144224420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37604 (or 37602 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 26.

Adding to 111144224420 its reverse (24422441111), we get a palindrome (135566665531).

The spelling of 111144224420 in words is "one hundred eleven billion, one hundred forty-four million, two hundred twenty-four thousand, four hundred twenty".