133220224 has 16 divisors (see below), whose sum is σ = 265399920. Its totient is φ = 66610048.

The previous prime is 133220189. The next prime is 133220249. The reversal of 133220224 is 422022331.

It is a tau number, because it is divible by the number of its divisors (16).

It is a super-2 number, since 2×133220224² = 35495256165220352, which contains 22 as substring.

It is a zygodrome in base 2.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 520264 + ... + 520519.

It is an arithmetic number, because the mean of its divisors is an integer number (16587495).

Almost surely, 2^133220224 is an apocalyptic number.

It is an amenable number.

133220224 is a deficient number, since it is larger than the sum of its proper divisors (132179696).

133220224 is an equidigital number, since it uses as much as digits as its factorization.

133220224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1040797 (or 1040785 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 133220224 is about 11542.1065668274. The cubic root of 133220224 is about 510.7284528116.

Adding to 133220224 its reverse (422022331), we get a palindrome (555242555).

The spelling of 133220224 in words is "one hundred thirty-three million, two hundred twenty thousand, two hundred twenty-four".