1111221203 has 2 divisors, whose sum is σ = 1111221204. Its totient is φ = 1111221202.

The previous prime is 1111221187. The next prime is 1111221229. The reversal of 1111221203 is 3021221111.

It is a weak prime.

It is an emirp because it is prime and its reverse (3021221111) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1111221203 - 2⁴ = 1111221187 is a prime.

It is not a weakly prime, because it can be changed into another prime (1111224203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 555610601 + 555610602.

It is an arithmetic number, because the mean of its divisors is an integer number (555610602).

Almost surely, 2^1111221203 is an apocalyptic number.

1111221203 is a deficient number, since it is larger than the sum of its proper divisors (1).

1111221203 is an equidigital number, since it uses as much as digits as its factorization.

1111221203 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24, while the sum is 14.

The square root of 1111221203 is about 33334.9846707629. The cubic root of 1111221203 is about 1035.7783756311.

Adding to 1111221203 its reverse (3021221111), we get a palindrome (4132442314).

The spelling of 1111221203 in words is "one billion, one hundred eleven million, two hundred twenty-one thousand, two hundred three".