1121203 has 2 divisors, whose sum is σ = 1121204. Its totient is φ = 1121202.

The previous prime is 1121191. The next prime is 1121221. The reversal of 1121203 is 3021211.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1121203 - 2¹³ = 1113011 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1121203.

It is not a weakly prime, because it can be changed into another prime (1121293) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 560601 + 560602.

It is an arithmetic number, because the mean of its divisors is an integer number (560602).

2^1121203 is an apocalyptic number.

1121203 is a deficient number, since it is larger than the sum of its proper divisors (1).

1121203 is an equidigital number, since it uses as much as digits as its factorization.

1121203 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12, while the sum is 10.

The square root of 1121203 is about 1058.8687359631. The cubic root of 1121203 is about 103.8870506992.

Adding to 1121203 its reverse (3021211), we get a palindrome (4142414).

The spelling of 1121203 in words is "one million, one hundred twenty-one thousand, two hundred three".