1333440221 has 2 divisors, whose sum is σ = 1333440222. Its totient is φ = 1333440220.

The previous prime is 1333440211. The next prime is 1333440239. The reversal of 1333440221 is 1220443331.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1089924196 + 243516025 = 33014^2 + 15605^2 .

It is a cyclic number.

It is not a de Polignac number, because 1333440221 - 2¹⁰ = 1333439197 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1333440211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 666720110 + 666720111.

It is an arithmetic number, because the mean of its divisors is an integer number (666720111).

Almost surely, 2^1333440221 is an apocalyptic number.

It is an amenable number.

1333440221 is a deficient number, since it is larger than the sum of its proper divisors (1).

1333440221 is an equidigital number, since it uses as much as digits as its factorization.

1333440221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1728, while the sum is 23.

The square root of 1333440221 is about 36516.3007573330. The cubic root of 1333440221 is about 1100.6718267872.

Adding to 1333440221 its reverse (1220443331), we get a palindrome (2553883552).

The spelling of 1333440221 in words is "one billion, three hundred thirty-three million, four hundred forty thousand, two hundred twenty-one".