1121221033 has 2 divisors, whose sum is σ = 1121221034. Its totient is φ = 1121221032.

The previous prime is 1121221019. The next prime is 1121221061. The reversal of 1121221033 is 3301221211.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 768232089 + 352988944 = 27717^2 + 18788^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1121221033 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1121220998 and 1121221016.

It is not a weakly prime, because it can be changed into another prime (1121221433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 560610516 + 560610517.

It is an arithmetic number, because the mean of its divisors is an integer number (560610517).

Almost surely, 2^1121221033 is an apocalyptic number.

It is an amenable number.

1121221033 is a deficient number, since it is larger than the sum of its proper divisors (1).

1121221033 is an equidigital number, since it uses as much as digits as its factorization.

1121221033 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 1121221033 is about 33484.6387616770. The cubic root of 1121221033 is about 1038.8760765605.

Adding to 1121221033 its reverse (3301221211), we get a palindrome (4422442244).

The spelling of 1121221033 in words is "one billion, one hundred twenty-one million, two hundred twenty-one thousand, thirty-three".