1333213221 has 8 divisors (see below), whose sum is σ = 1802654784. Its totient is φ = 876290240.

The previous prime is 1333213213. The next prime is 1333213241. The reversal of 1333213221 is 1223123331.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1333213221 - 2³ = 1333213213 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1333213241) 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 7 ways as a sum of consecutive naturals, for example, 3129396 + ... + 3129821.

It is an arithmetic number, because the mean of its divisors is an integer number (225331848).

Almost surely, 2^1333213221 is an apocalyptic number.

It is an amenable number.

1333213221 is a deficient number, since it is larger than the sum of its proper divisors (469441563).

1333213221 is an equidigital number, since it uses as much as digits as its factorization.

1333213221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6259291.

The product of its digits is 648, while the sum is 21.

The square root of 1333213221 is about 36513.1924241089. The cubic root of 1333213221 is about 1100.6093651235.

Adding to 1333213221 its reverse (1223123331), we get a palindrome (2556336552).

The spelling of 1333213221 in words is "one billion, three hundred thirty-three million, two hundred thirteen thousand, two hundred twenty-one".