111221402403 has 16 divisors (see below), whose sum is σ = 149014632096. Its totient is φ = 73788679680.

The previous prime is 111221402353. The next prime is 111221402441. The reversal of 111221402403 is 304204122111.

It is not a de Polignac number, because 111221402403 - 2⁹ = 111221401891 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 111221402403.

It is not an unprimeable number, because it can be changed into a prime (111221402203) 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, 465333 + ... + 662553.

It is an arithmetic number, because the mean of its divisors is an integer number (9313414506).

Almost surely, 2^111221402403 is an apocalyptic number.

111221402403 is a deficient number, since it is larger than the sum of its proper divisors (37793229693).

111221402403 is a wasteful number, since it uses less digits than its factorization.

111221402403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 198134.

The product of its (nonzero) digits is 384, while the sum is 21.

Adding to 111221402403 its reverse (304204122111), we get a palindrome (415425524514).

The spelling of 111221402403 in words is "one hundred eleven billion, two hundred twenty-one million, four hundred two thousand, four hundred three".