33344021021 has 2 divisors, whose sum is σ = 33344021022. Its totient is φ = 33344021020.

The previous prime is 33344020993. The next prime is 33344021023. The reversal of 33344021021 is 12012044333.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19047036121 + 14296984900 = 138011^2 + 119570^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-33344021021 is a prime.

It is a super-2 number, since 2×33344021021² (a number of 22 digits) contains 22 as substring.

Together with 33344021023, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (33344021023) 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, 16672010510 + 16672010511.

It is an arithmetic number, because the mean of its divisors is an integer number (16672010511).

Almost surely, 2^33344021021 is an apocalyptic number.

It is an amenable number.

33344021021 is a deficient number, since it is larger than the sum of its proper divisors (1).

33344021021 is an equidigital number, since it uses as much as digits as its factorization.

33344021021 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.

Adding to 33344021021 its reverse (12012044333), we get a palindrome (45356065354).

The spelling of 33344021021 in words is "thirty-three billion, three hundred forty-four million, twenty-one thousand, twenty-one".