1333221121 has 4 divisors (see below), whose sum is σ = 1345019652. Its totient is φ = 1321422592.

The previous prime is 1333221103. The next prime is 1333221133. The reversal of 1333221121 is 1211223331.

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 167340096 + 1165881025 = 12936^2 + 34145^2 .

It is a cyclic number.

It is not a de Polignac number, because 1333221121 - 2¹¹ = 1333219073 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1333221101) 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, 5899096 + ... + 5899321.

It is an arithmetic number, because the mean of its divisors is an integer number (336254913).

Almost surely, 2^1333221121 is an apocalyptic number.

It is an amenable number.

1333221121 is a deficient number, since it is larger than the sum of its proper divisors (11798531).

1333221121 is a wasteful number, since it uses less digits than its factorization.

1333221121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11798530.

The product of its digits is 216, while the sum is 19.

The square root of 1333221121 is about 36513.3006040265. The cubic root of 1333221121 is about 1100.6115390186.

Adding to 1333221121 its reverse (1211223331), we get a palindrome (2544444452).

It can be divided in two parts, 13332 and 21121, that added together give a triangular number (34453 = T₂₆₂).

The spelling of 1333221121 in words is "one billion, three hundred thirty-three million, two hundred twenty-one thousand, one hundred twenty-one".