33424121 has 2 divisors, whose sum is σ = 33424122. Its totient is φ = 33424120.

The previous prime is 33424117. The next prime is 33424123. The reversal of 33424121 is 12142433.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 23658496 + 9765625 = 4864^2 + 3125^2 .

It is an emirp because it is prime and its reverse (12142433) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 33424121 - 2² = 33424117 is a prime.

It is a super-2 number, since 2×33424121² = 2234343729245282, which contains 22 as substring.

Together with 33424123, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 33424093 and 33424102.

It is not a weakly prime, because it can be changed into another prime (33424123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16712060 + 16712061.

It is an arithmetic number, because the mean of its divisors is an integer number (16712061).

Almost surely, 2^33424121 is an apocalyptic number.

It is an amenable number.

33424121 is a deficient number, since it is larger than the sum of its proper divisors (1).

33424121 is an equidigital number, since it uses as much as digits as its factorization.

33424121 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 576, while the sum is 20.

The square root of 33424121 is about 5781.3597881467. The cubic root of 33424121 is about 322.1217117656.

Adding to 33424121 its reverse (12142433), we get a palindrome (45566554).

The spelling of 33424121 in words is "thirty-three million, four hundred twenty-four thousand, one hundred twenty-one".