1220312033 has 2 divisors, whose sum is σ = 1220312034. Its totient is φ = 1220312032.

The previous prime is 1220312017. The next prime is 1220312047. The reversal of 1220312033 is 3302130221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1214661904 + 5650129 = 34852^2 + 2377^2 .

It is a cyclic number.

It is not a de Polignac number, because 1220312033 - 2⁴ = 1220312017 is a prime.

It is a super-2 number, since 2×1220312033² = 2978322915769186178, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1220312053) 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, 610156016 + 610156017.

It is an arithmetic number, because the mean of its divisors is an integer number (610156017).

Almost surely, 2^1220312033 is an apocalyptic number.

It is an amenable number.

1220312033 is a deficient number, since it is larger than the sum of its proper divisors (1).

1220312033 is an equidigital number, since it uses as much as digits as its factorization.

1220312033 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 216, while the sum is 17.

The square root of 1220312033 is about 34932.9648469751. The cubic root of 1220312033 is about 1068.6208197980.

Adding to 1220312033 its reverse (3302130221), we get a palindrome (4522442254).

The spelling of 1220312033 in words is "one billion, two hundred twenty million, three hundred twelve thousand, thirty-three".