133221324 has 12 divisors (see below), whose sum is σ = 310849784. Its totient is φ = 44407104.

The previous prime is 133221317. The next prime is 133221343. The reversal of 133221324 is 423122331.

It is a tau number, because it is divible by the number of its divisors (12).

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

It is a self number, because there is not a number n which added to its sum of digits gives 133221324.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5550877 + ... + 5550900.

Almost surely, 2^133221324 is an apocalyptic number.

It is an amenable number.

133221324 is an abundant number, since it is smaller than the sum of its proper divisors (177628460).

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

133221324 is a wasteful number, since it uses less digits than its factorization.

133221324 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11101784 (or 11101782 counting only the distinct ones).

The product of its digits is 864, while the sum is 21.

The square root of 133221324 is about 11542.1542183424. The cubic root of 133221324 is about 510.7298585035.

Adding to 133221324 its reverse (423122331), we get a palindrome (556343655).

The spelling of 133221324 in words is "one hundred thirty-three million, two hundred twenty-one thousand, three hundred twenty-four".