111213126203 has 2 divisors, whose sum is σ = 111213126204. Its totient is φ = 111213126202.

The previous prime is 111213126139. The next prime is 111213126209. The reversal of 111213126203 is 302621312111.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 111213126203 - 2⁶ = 111213126139 is a prime.

It is not a weakly prime, because it can be changed into another prime (111213126209) by changing a digit.

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 as a sum of consecutive naturals, namely, 55606563101 + 55606563102.

It is an arithmetic number, because the mean of its divisors is an integer number (55606563102).

Almost surely, 2^111213126203 is an apocalyptic number.

111213126203 is a deficient number, since it is larger than the sum of its proper divisors (1).

111213126203 is an equidigital number, since it uses as much as digits as its factorization.

111213126203 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 23.

Adding to 111213126203 its reverse (302621312111), we get a palindrome (413834438314).

The spelling of 111213126203 in words is "one hundred eleven billion, two hundred thirteen million, one hundred twenty-six thousand, two hundred three".