33102221 has 8 divisors (see below), whose sum is σ = 35058624. Its totient is φ = 31188960.

The previous prime is 33102197. The next prime is 33102233. The reversal of 33102221 is 12220133.

It is a happy number.

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 33102221 - 2¹⁴ = 33085837 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 33102196 and 33102205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33102271) 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, 9200 + ... + 12281.

It is an arithmetic number, because the mean of its divisors is an integer number (4382328).

Almost surely, 2^33102221 is an apocalyptic number.

It is an amenable number.

33102221 is a deficient number, since it is larger than the sum of its proper divisors (1956403).

33102221 is a wasteful number, since it uses less digits than its factorization.

33102221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21571.

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 33102221 is about 5753.4529632213. The cubic root of 33102221 is about 321.0842808816.

Adding to 33102221 its reverse (12220133), we get a palindrome (45322354).

The spelling of 33102221 in words is "thirty-three million, one hundred two thousand, two hundred twenty-one".