1333221445 has 4 divisors (see below), whose sum is σ = 1599865740. Its totient is φ = 1066577152.

The previous prime is 1333221443. The next prime is 1333221451. The reversal of 1333221445 is 5441223331.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 690953796 + 642267649 = 26286^2 + 25343^2 .

It is a cyclic number.

It is not a de Polignac number, because 1333221445 - 2¹ = 1333221443 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1333221443) 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 3 ways as a sum of consecutive naturals, for example, 133322140 + ... + 133322149.

It is an arithmetic number, because the mean of its divisors is an integer number (399966435).

Almost surely, 2^1333221445 is an apocalyptic number.

It is an amenable number.

1333221445 is a deficient number, since it is larger than the sum of its proper divisors (266644295).

1333221445 is an equidigital number, since it uses as much as digits as its factorization.

1333221445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 266644294.

The product of its digits is 8640, while the sum is 28.

The square root of 1333221445 is about 36513.3050407656. The cubic root of 1333221445 is about 1100.6116281756.

Adding to 1333221445 its reverse (5441223331), we get a palindrome (6774444776).

It can be divided in two parts, 1333 and 221445, that added together give a triangular number (222778 = T₆₆₇).

The spelling of 1333221445 in words is "one billion, three hundred thirty-three million, two hundred twenty-one thousand, four hundred forty-five".