33312222 has 40 divisors (see below), whose sum is σ = 75890232. Its totient is φ = 10918800.

The previous prime is 33312179. The next prime is 33312233. The reversal of 33312222 is 22221333.

It is a happy number.

It is a super-2 number, since 2×33312222² = 2219408269154568, which contains 22 as substring.

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

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 33312195 and 33312204.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 8197 + ... + 11567.

Almost surely, 2^33312222 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 33312222, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37945116).

33312222 is an abundant number, since it is smaller than the sum of its proper divisors (42578010).

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

33312222 is a wasteful number, since it uses less digits than its factorization.

33312222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3446 (or 3437 counting only the distinct ones).

The product of its digits is 432, while the sum is 18.

The square root of 33312222 is about 5771.6741072240. The cubic root of 33312222 is about 321.7618379592.

Adding to 33312222 its reverse (22221333), we get a palindrome (55533555).

The spelling of 33312222 in words is "thirty-three million, three hundred twelve thousand, two hundred twenty-two".