133101321 has 32 divisors (see below), whose sum is σ = 192380928. Its totient is φ = 81673920.

The previous prime is 133101301. The next prime is 133101323. The reversal of 133101321 is 123101331.

It is not a de Polignac number, because 133101321 - 2⁷ = 133101193 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 133101321.

It is not an unprimeable number, because it can be changed into a prime (133101323) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 161316 + ... + 162138.

It is an arithmetic number, because the mean of its divisors is an integer number (6011904).

Almost surely, 2^133101321 is an apocalyptic number.

It is an amenable number.

133101321 is a deficient number, since it is larger than the sum of its proper divisors (59279607).

133101321 is a wasteful number, since it uses less digits than its factorization.

133101321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 941.

The product of its (nonzero) digits is 54, while the sum is 15.

The square root of 133101321 is about 11536.9545808242. The cubic root of 133101321 is about 510.5764608210.

Adding to 133101321 its reverse (123101331), we get a palindrome (256202652).

The spelling of 133101321 in words is "one hundred thirty-three million, one hundred one thousand, three hundred twenty-one".