1333013221 has 4 divisors (see below), whose sum is σ = 1334034432. Its totient is φ = 1331992012.

The previous prime is 1333013219. The next prime is 1333013233. The reversal of 1333013221 is 1223103331.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1223103331 = 941 ⋅1299791.

It is a cyclic number.

It is not a de Polignac number, because 1333013221 - 2¹ = 1333013219 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1333013281) 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, 508645 + ... + 511258.

It is an arithmetic number, because the mean of its divisors is an integer number (333508608).

Almost surely, 2^1333013221 is an apocalyptic number.

It is an amenable number.

1333013221 is a deficient number, since it is larger than the sum of its proper divisors (1021211).

1333013221 is a wasteful number, since it uses less digits than its factorization.

1333013221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1021210.

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

The square root of 1333013221 is about 36510.4535852405. The cubic root of 1333013221 is about 1100.5543269452.

Adding to 1333013221 its reverse (1223103331), we get a palindrome (2556116552).

The spelling of 1333013221 in words is "one billion, three hundred thirty-three million, thirteen thousand, two hundred twenty-one".