33330222 has 48 divisors (see below), whose sum is σ = 75900240. Its totient is φ = 10555776.

The previous prime is 33330133. The next prime is 33330247. The reversal of 33330222 is 22203333.

It is a super-2 number, since 2×33330222² = 2221807397138568, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 33330195 and 33330204.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 34498 + ... + 35450.

It is an arithmetic number, because the mean of its divisors is an integer number (1581255).

Almost surely, 2^33330222 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 33330222, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37950120).

33330222 is an abundant number, since it is smaller than the sum of its proper divisors (42570018).

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

33330222 is a wasteful number, since it uses less digits than its factorization.

33330222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1057 (or 1054 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 18.

The square root of 33330222 is about 5773.2332362377. The cubic root of 33330222 is about 321.8197813593.

Adding to 33330222 its reverse (22203333), we get a palindrome (55533555).

The spelling of 33330222 in words is "thirty-three million, three hundred thirty thousand, two hundred twenty-two".