33222218 has 16 divisors (see below), whose sum is σ = 51819264. Its totient is φ = 15961440.

The previous prime is 33222191. The next prime is 33222223. The reversal of 33222218 is 81222233.

It is a super-2 number, since 2×33222218² = 2207431537679048, which contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 33222193 and 33222202.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2471 + ... + 8517.

It is an arithmetic number, because the mean of its divisors is an integer number (3238704).

Almost surely, 2^33222218 is an apocalyptic number.

33222218 is a deficient number, since it is larger than the sum of its proper divisors (18597046).

33222218 is a wasteful number, since it uses less digits than its factorization.

33222218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6157.

The product of its digits is 1152, while the sum is 23.

The square root of 33222218 is about 5763.8717889974. The cubic root of 33222218 is about 321.4717945308.

The spelling of 33222218 in words is "thirty-three million, two hundred twenty-two thousand, two hundred eighteen".