133322221 has 8 divisors (see below), whose sum is σ = 143326080. Its totient is φ = 123617088.

The previous prime is 133322213. The next prime is 133322257. The reversal of 133322221 is 122223331.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 133322221 - 2³ = 133322213 is a prime.

It is a super-3 number, since 3×133322221³ (a number of 25 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133322261) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 73756 + ... + 75541.

It is an arithmetic number, because the mean of its divisors is an integer number (17915760).

Almost surely, 2^133322221 is an apocalyptic number.

It is an amenable number.

133322221 is a deficient number, since it is larger than the sum of its proper divisors (10003859).

133322221 is a wasteful number, since it uses less digits than its factorization.

133322221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149363.

The product of its digits is 432, while the sum is 19.

The square root of 133322221 is about 11546.5241956184. The cubic root of 133322221 is about 510.8587620583.

Adding to 133322221 its reverse (122223331), we get a palindrome (255545552).

The spelling of 133322221 in words is "one hundred thirty-three million, three hundred twenty-two thousand, two hundred twenty-one".