33421211309 has 2 divisors, whose sum is σ = 33421211310. Its totient is φ = 33421211308.

The previous prime is 33421211293. The next prime is 33421211323. The reversal of 33421211309 is 90311212433.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 31157545225 + 2263666084 = 176515^2 + 47578^2 .

It is a cyclic number.

It is not a de Polignac number, because 33421211309 - 2⁴ = 33421211293 is a prime.

It is a super-2 number, since 2×33421211309² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (33421211359) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16710605654 + 16710605655.

It is an arithmetic number, because the mean of its divisors is an integer number (16710605655).

Almost surely, 2^33421211309 is an apocalyptic number.

It is an amenable number.

33421211309 is a deficient number, since it is larger than the sum of its proper divisors (1).

33421211309 is an equidigital number, since it uses as much as digits as its factorization.

33421211309 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 29.

The spelling of 33421211309 in words is "thirty-three billion, four hundred twenty-one million, two hundred eleven thousand, three hundred nine".