33143222 has 16 divisors (see below), whose sum is σ = 56920320. Its totient is φ = 14178408.

The previous prime is 33143213. The next prime is 33143233. The reversal of 33143222 is 22234133.

It is a junction number, because it is equal to n+sod(n) for n = 33143194 and 33143203.

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 7 ways as a sum of consecutive naturals, for example, 7229 + ... + 10887.

It is an arithmetic number, because the mean of its divisors is an integer number (3557520).

Almost surely, 2^33143222 is an apocalyptic number.

33143222 is a deficient number, since it is larger than the sum of its proper divisors (23777098).

33143222 is a wasteful number, since it uses less digits than its factorization.

33143222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4315.

The product of its digits is 864, while the sum is 20.

The square root of 33143222 is about 5757.0150251671. The cubic root of 33143222 is about 321.2167930873.

Adding to 33143222 its reverse (22234133), we get a palindrome (55377355).

The spelling of 33143222 in words is "thirty-three million, one hundred forty-three thousand, two hundred twenty-two".