33741221 has 4 divisors (see below), whose sum is σ = 33901344. Its totient is φ = 33581100.

The previous prime is 33741193. The next prime is 33741223. The reversal of 33741221 is 12214733.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 12214733 = 127 ⋅96179.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-33741221 is a prime.

It is a super-2 number, since 2×33741221² = 2276939989141682, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33741223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 79745 + ... + 80166.

It is an arithmetic number, because the mean of its divisors is an integer number (8475336).

Almost surely, 2^33741221 is an apocalyptic number.

It is an amenable number.

33741221 is a deficient number, since it is larger than the sum of its proper divisors (160123).

33741221 is a wasteful number, since it uses less digits than its factorization.

33741221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 160122.

The product of its digits is 1008, while the sum is 23.

The square root of 33741221 is about 5808.7193941522. The cubic root of 33741221 is about 323.1371806569.

Adding to 33741221 its reverse (12214733), we get a palindrome (45955954).

The spelling of 33741221 in words is "thirty-three million, seven hundred forty-one thousand, two hundred twenty-one".