33205121 has 8 divisors (see below), whose sum is σ = 34105344. Its totient is φ = 32309280.

The previous prime is 33205079. The next prime is 33205129. The reversal of 33205121 is 12150233.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 33205121 - 2⁶ = 33205057 is a prime.

It is a super-2 number, since 2×33205121² = 2205160121249282, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 33205121.

It is not an unprimeable number, because it can be changed into a prime (33205129) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19136 + ... + 20798.

It is an arithmetic number, because the mean of its divisors is an integer number (4263168).

Almost surely, 2^33205121 is an apocalyptic number.

It is an amenable number.

33205121 is a deficient number, since it is larger than the sum of its proper divisors (900223).

33205121 is a wasteful number, since it uses less digits than its factorization.

33205121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2191.

The product of its (nonzero) digits is 180, while the sum is 17.

The square root of 33205121 is about 5762.3884804827. The cubic root of 33205121 is about 321.4166392090.

Adding to 33205121 its reverse (12150233), we get a palindrome (45355354).

The spelling of 33205121 in words is "thirty-three million, two hundred five thousand, one hundred twenty-one".