33220601 has 4 divisors (see below), whose sum is σ = 35174772. Its totient is φ = 31266432.

The previous prime is 33220597. The next prime is 33220609. The reversal of 33220601 is 10602233.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 16810000 + 16410601 = 4100^2 + 4051^2 .

It is a cyclic number.

It is not a de Polignac number, because 33220601 - 2² = 33220597 is a prime.

It is a super-2 number, since 2×33220601² = 2207216661602402, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (17), and also a Moran number because the ratio is a prime number: 1954153 = 33220601 / (3 + 3 + 2 + 2 + 0 + 6 + 0 + 1).

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 33220601.

It is not an unprimeable number, because it can be changed into a prime (33220609) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 977060 + ... + 977093.

It is an arithmetic number, because the mean of its divisors is an integer number (8793693).

Almost surely, 2^33220601 is an apocalyptic number.

It is an amenable number.

33220601 is a deficient number, since it is larger than the sum of its proper divisors (1954171).

33220601 is a wasteful number, since it uses less digits than its factorization.

33220601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1954170.

The product of its (nonzero) digits is 216, while the sum is 17.

The square root of 33220601 is about 5763.7315169949. The cubic root of 33220601 is about 321.4665788613.

Adding to 33220601 its reverse (10602233), we get a palindrome (43822834).

The spelling of 33220601 in words is "thirty-three million, two hundred twenty thousand, six hundred one".