1221030333 has 6 divisors (see below), whose sum is σ = 1763710494. Its totient is φ = 814020216.

The previous prime is 1221030331. The next prime is 1221030359. The reversal of 1221030333 is 3330301221.

It can be written as a sum of positive squares in only one way, i.e., 666569124 + 554461209 = 25818^2 + 23547^2 .

It is not a de Polignac number, because 1221030333 - 2¹ = 1221030331 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1221030331) 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 in 5 ways as a sum of consecutive naturals, for example, 67835010 + ... + 67835027.

It is an arithmetic number, because the mean of its divisors is an integer number (293951749).

Almost surely, 2^1221030333 is an apocalyptic number.

It is an amenable number.

1221030333 is a deficient number, since it is larger than the sum of its proper divisors (542680161).

1221030333 is a wasteful number, since it uses less digits than its factorization.

1221030333 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135670043 (or 135670040 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 18.

The square root of 1221030333 is about 34943.2444544006. The cubic root of 1221030333 is about 1068.8304491816.

Adding to 1221030333 its reverse (3330301221), we get a palindrome (4551331554).

The spelling of 1221030333 in words is "one billion, two hundred twenty-one million, thirty thousand, three hundred thirty-three".