111004401205 has 4 divisors (see below), whose sum is σ = 133205281452. Its totient is φ = 88803520960.

The previous prime is 111004401133. The next prime is 111004401223. The reversal of 111004401205 is 502104400111.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 502104400111 = 199 ⋅2523137689.

It can be written as a sum of positive squares in 2 ways, for example, as 49721418289 + 61282982916 = 222983^2 + 247554^2 .

It is not a de Polignac number, because 111004401205 - 2¹⁹ = 111003876917 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11100440116 + ... + 11100440125.

It is an arithmetic number, because the mean of its divisors is an integer number (33301320363).

Almost surely, 2^111004401205 is an apocalyptic number.

It is an amenable number.

111004401205 is a deficient number, since it is larger than the sum of its proper divisors (22200880247).

111004401205 is an equidigital number, since it uses as much as digits as its factorization.

111004401205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22200880246.

The product of its (nonzero) digits is 160, while the sum is 19.

Adding to 111004401205 its reverse (502104400111), we get a palindrome (613108801316).

The spelling of 111004401205 in words is "one hundred eleven billion, four million, four hundred one thousand, two hundred five".