1333421209 has 2 divisors, whose sum is σ = 1333421210. Its totient is φ = 1333421208.

The previous prime is 1333421119. The next prime is 1333421227. The reversal of 1333421209 is 9021243331.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 941262400 + 392158809 = 30680^2 + 19803^2 .

It is an emirp because it is prime and its reverse (9021243331) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1333421209 is a prime.

It is a super-2 number, since 2×1333421209² = 3556024241222043362, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1333421249) 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 as a sum of consecutive naturals, namely, 666710604 + 666710605.

It is an arithmetic number, because the mean of its divisors is an integer number (666710605).

Almost surely, 2^1333421209 is an apocalyptic number.

It is an amenable number.

1333421209 is a deficient number, since it is larger than the sum of its proper divisors (1).

1333421209 is an equidigital number, since it uses as much as digits as its factorization.

1333421209 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3888, while the sum is 28.

The square root of 1333421209 is about 36516.0404343078. The cubic root of 1333421209 is about 1100.6665956885. Note that the first 3 decimals are identical.

It can be divided in two parts, 13334 and 21209, that added together give a palindrome (34543).

The spelling of 1333421209 in words is "one billion, three hundred thirty-three million, four hundred twenty-one thousand, two hundred nine".