33222210 has 32 divisors (see below), whose sum is σ = 91124352. Its totient is φ = 7593600.

The previous prime is 33222191. The next prime is 33222223. The reversal of 33222210 is 1222233.

It is a super-2 number, since 2×33222210² = 2207430474568200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a Curzon number.

It is a nialpdrome in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 33222210.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 78891 + ... + 79310.

It is an arithmetic number, because the mean of its divisors is an integer number (2847636).

Almost surely, 2^33222210 is an apocalyptic number.

33222210 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

33222210 is an abundant number, since it is smaller than the sum of its proper divisors (57902142).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

33222210 is a wasteful number, since it uses less digits than its factorization.

33222210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158218.

The product of its (nonzero) digits is 144, while the sum is 15.

The square root of 33222210 is about 5763.8710950194. The cubic root of 33222210 is about 321.4717687270.

Adding to 33222210 its reverse (1222233), we get a palindrome (34444443).

The spelling of 33222210 in words is "thirty-three million, two hundred twenty-two thousand, two hundred ten".