111242231420 has 48 divisors (see below), whose sum is σ = 235329494400. Its totient is φ = 44170002240.

The previous prime is 111242231383. The next prime is 111242231459. The reversal of 111242231420 is 24132242111.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2016971 + ... + 2071389.

It is an arithmetic number, because the mean of its divisors is an integer number (4902697800).

Almost surely, 2^111242231420 is an apocalyptic number.

111242231420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111242231420 is an abundant number, since it is smaller than the sum of its proper divisors (124087262980).

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

111242231420 is a wasteful number, since it uses less digits than its factorization.

111242231420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55178 (or 55176 counting only the distinct ones).

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

Adding to 111242231420 its reverse (24132242111), we get a palindrome (135374473531).

The spelling of 111242231420 in words is "one hundred eleven billion, two hundred forty-two million, two hundred thirty-one thousand, four hundred twenty".