133312313201221 has 16 divisors (see below), whose sum is σ = 166219851345408. Its totient is φ = 103872042054000.

The previous prime is 133312313201189. The next prime is 133312313201311. The reversal of 133312313201221 is 122102313213331.

It is not a de Polignac number, because 133312313201221 - 2⁵ = 133312313201189 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 133312313201221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133312313201021) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 62972955 + ... + 65055496.

It is an arithmetic number, because the mean of its divisors is an integer number (10388740709088).

Almost surely, 2^{133312313201221} is an apocalyptic number.

133312313201221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

133312313201221 is a deficient number, since it is larger than the sum of its proper divisors (32907538144187).

133312313201221 is a wasteful number, since it uses less digits than its factorization.

133312313201221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128041992.

The product of its (nonzero) digits is 3888, while the sum is 28.

Adding to 133312313201221 its reverse (122102313213331), we get a palindrome (255414626414552).

The spelling of 133312313201221 in words is "one hundred thirty-three trillion, three hundred twelve billion, three hundred thirteen million, two hundred one thousand, two hundred twenty-one".