1220323133 has 2 divisors, whose sum is σ = 1220323134. Its totient is φ = 1220323132.

The previous prime is 1220323129. The next prime is 1220323141. The reversal of 1220323133 is 3313230221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 653978329 + 566344804 = 25573^2 + 23798^2 .

It is a cyclic number.

It is not a de Polignac number, because 1220323133 - 2² = 1220323129 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1220322133) 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, 610161566 + 610161567.

It is an arithmetic number, because the mean of its divisors is an integer number (610161567).

Almost surely, 2^1220323133 is an apocalyptic number.

It is an amenable number.

1220323133 is a deficient number, since it is larger than the sum of its proper divisors (1).

1220323133 is an equidigital number, since it uses as much as digits as its factorization.

1220323133 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 648, while the sum is 20.

The square root of 1220323133 is about 34933.1237223355. The cubic root of 1220323133 is about 1068.6240598587.

Adding to 1220323133 its reverse (3313230221), we get a palindrome (4533553354).

The spelling of 1220323133 in words is "one billion, two hundred twenty million, three hundred twenty-three thousand, one hundred thirty-three".