111420203 has 4 divisors (see below), whose sum is σ = 111822720. Its totient is φ = 111017688.

The previous prime is 111420191. The next prime is 111420223. The reversal of 111420203 is 302024111.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 302024111 = 2579 ⋅117109.

It is a cyclic number.

It is not a de Polignac number, because 111420203 - 2⁶ = 111420139 is a prime.

It is a super-2 number, since 2×111420203² = 24828923273122418, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111420223) 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, 200843 + ... + 201396.

It is an arithmetic number, because the mean of its divisors is an integer number (27955680).

Almost surely, 2^111420203 is an apocalyptic number.

111420203 is a deficient number, since it is larger than the sum of its proper divisors (402517).

111420203 is an equidigital number, since it uses as much as digits as its factorization.

111420203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 402516.

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 111420203 is about 10555.5768672299. The cubic root of 111420203 is about 481.1952316827.

Adding to 111420203 its reverse (302024111), we get a palindrome (413444314).

The spelling of 111420203 in words is "one hundred eleven million, four hundred twenty thousand, two hundred three".