1221130333 has 2 divisors, whose sum is σ = 1221130334. Its totient is φ = 1221130332.

The previous prime is 1221130327. The next prime is 1221130343. The reversal of 1221130333 is 3330311221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1220663844 + 466489 = 34938^2 + 683^2 .

It is a cyclic number.

It is not a de Polignac number, because 1221130333 - 2²⁹ = 684259421 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1221130333.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1221130343) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 610565166 + 610565167.

It is an arithmetic number, because the mean of its divisors is an integer number (610565167).

Almost surely, 2^1221130333 is an apocalyptic number.

It is an amenable number.

1221130333 is a deficient number, since it is larger than the sum of its proper divisors (1).

1221130333 is an equidigital number, since it uses as much as digits as its factorization.

1221130333 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 324, while the sum is 19.

The square root of 1221130333 is about 34944.6753168491. The cubic root of 1221130333 is about 1068.8596267607.

Adding to 1221130333 its reverse (3330311221), we get a palindrome (4551441554).

The spelling of 1221130333 in words is "one billion, two hundred twenty-one million, one hundred thirty thousand, three hundred thirty-three".