111421032303 has 16 divisors (see below), whose sum is σ = 172110246656. Its totient is φ = 62796980160.

The previous prime is 111421032299. The next prime is 111421032343. The reversal of 111421032303 is 303230124111.

It is not a de Polignac number, because 111421032303 - 2² = 111421032299 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 111421032303.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111421032343) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36339313 + ... + 36342378.

It is an arithmetic number, because the mean of its divisors is an integer number (10756890416).

Almost surely, 2^111421032303 is an apocalyptic number.

111421032303 is a deficient number, since it is larger than the sum of its proper divisors (60689214353).

111421032303 is an equidigital number, since it uses as much as digits as its factorization.

111421032303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72681774.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 111421032303 its reverse (303230124111), we get a palindrome (414651156414).

The spelling of 111421032303 in words is "one hundred eleven billion, four hundred twenty-one million, thirty-two thousand, three hundred three".