33434021 has 2 divisors, whose sum is σ = 33434022. Its totient is φ = 33434020.

The previous prime is 33434017. The next prime is 33434033. The reversal of 33434021 is 12043433.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 32604100 + 829921 = 5710^2 + 911^2 .

It is a cyclic number.

It is not a de Polignac number, because 33434021 - 2² = 33434017 is a prime.

It is a super-2 number, since 2×33434021² = 2235667520456882, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 33433984 and 33434002.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (33434221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16717010 + 16717011.

It is an arithmetic number, because the mean of its divisors is an integer number (16717011).

Almost surely, 2^33434021 is an apocalyptic number.

It is an amenable number.

33434021 is a deficient number, since it is larger than the sum of its proper divisors (1).

33434021 is an equidigital number, since it uses as much as digits as its factorization.

33434021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 864, while the sum is 20.

The square root of 33434021 is about 5782.2159247126. The cubic root of 33434021 is about 322.1535120548.

Adding to 33434021 its reverse (12043433), we get a palindrome (45477454).

The spelling of 33434021 in words is "thirty-three million, four hundred thirty-four thousand, twenty-one".