111421550243 has 4 divisors (see below), whose sum is σ = 111422219328. Its totient is φ = 111420881160.

The previous prime is 111421550203. The next prime is 111421550257. The reversal of 111421550243 is 342055124111.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 111421550243 - 2³⁴ = 94241681059 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111421550203) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 133838 + ... + 490668.

It is an arithmetic number, because the mean of its divisors is an integer number (27855554832).

Almost surely, 2^111421550243 is an apocalyptic number.

111421550243 is a deficient number, since it is larger than the sum of its proper divisors (669085).

111421550243 is an equidigital number, since it uses as much as digits as its factorization.

111421550243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 669084.

The product of its (nonzero) digits is 4800, while the sum is 29.

Adding to 111421550243 its reverse (342055124111), we get a palindrome (453476674354).

The spelling of 111421550243 in words is "one hundred eleven billion, four hundred twenty-one million, five hundred fifty thousand, two hundred forty-three".