1211122303 has 2 divisors, whose sum is σ = 1211122304. Its totient is φ = 1211122302.

The previous prime is 1211122277. The next prime is 1211122321. The reversal of 1211122303 is 3032211121.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1211122303 - 2⁵ = 1211122271 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1211122343) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 605561151 + 605561152.

It is an arithmetic number, because the mean of its divisors is an integer number (605561152).

Almost surely, 2^1211122303 is an apocalyptic number.

1211122303 is a deficient number, since it is larger than the sum of its proper divisors (1).

1211122303 is an equidigital number, since it uses as much as digits as its factorization.

1211122303 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 1211122303 is about 34801.1824942774. The cubic root of 1211122303 is about 1065.9315918705.

Adding to 1211122303 its reverse (3032211121), we get a palindrome (4243333424).

The spelling of 1211122303 in words is "one billion, two hundred eleven million, one hundred twenty-two thousand, three hundred three".