1333424221 has 2 divisors, whose sum is σ = 1333424222. Its totient is φ = 1333424220.

The previous prime is 1333424203. The next prime is 1333424231. The reversal of 1333424221 is 1224243331.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 884408121 + 449016100 = 29739^2 + 21190^2 .

It is a cyclic number.

It is not a de Polignac number, because 1333424221 - 2⁹ = 1333423709 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1333424231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 666712110 + 666712111.

It is an arithmetic number, because the mean of its divisors is an integer number (666712111).

Almost surely, 2^1333424221 is an apocalyptic number.

It is an amenable number.

1333424221 is a deficient number, since it is larger than the sum of its proper divisors (1).

1333424221 is an equidigital number, since it uses as much as digits as its factorization.

1333424221 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3456, while the sum is 25.

The square root of 1333424221 is about 36516.0816764340. The cubic root of 1333424221 is about 1100.6674244352.

Adding to 1333424221 its reverse (1224243331), we get a palindrome (2557667552).

The spelling of 1333424221 in words is "one billion, three hundred thirty-three million, four hundred twenty-four thousand, two hundred twenty-one".