111005420203 has 4 divisors (see below), whose sum is σ = 116847810760. Its totient is φ = 105163029648.

The previous prime is 111005420189. The next prime is 111005420209. The reversal of 111005420203 is 302024500111.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 111005420203 - 2⁵ = 111005420171 is a prime.

It is a super-2 number, since 2×111005420203² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (19), and also a Moran number because the ratio is a prime number: 5842390537 = 111005420203 / (1 + 1 + 1 + 0 + 0 + 5 + 4 + 2 + 0 + 2 + 0 + 3).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111005420209) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2921195250 + ... + 2921195287.

It is an arithmetic number, because the mean of its divisors is an integer number (29211952690).

Almost surely, 2^111005420203 is an apocalyptic number.

111005420203 is a deficient number, since it is larger than the sum of its proper divisors (5842390557).

111005420203 is an equidigital number, since it uses as much as digits as its factorization.

111005420203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5842390556.

The product of its (nonzero) digits is 240, while the sum is 19.

Adding to 111005420203 its reverse (302024500111), we get a palindrome (413029920314).

The spelling of 111005420203 in words is "one hundred eleven billion, five million, four hundred twenty thousand, two hundred three".