133112232113221 has 8 divisors (see below), whose sum is σ = 135295602587000. Its totient is φ = 130928900437440.

The previous prime is 133112232113219. The next prime is 133112232113291. The reversal of 133112232113221 is 122311232211331.

It can be written as a sum of positive squares in 4 ways, for example, as 29592392332321 + 103519839780900 = 5439889^2 + 10174470^2 .

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 133112232113221 - 2¹ = 133112232113219 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 133112232113221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133112232113291) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2740806 + ... + 16544983.

It is an arithmetic number, because the mean of its divisors is an integer number (16911950323375).

Almost surely, 2^{133112232113221} is an apocalyptic number.

It is an amenable number.

133112232113221 is a deficient number, since it is larger than the sum of its proper divisors (2183370473779).

133112232113221 is a wasteful number, since it uses less digits than its factorization.

133112232113221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19398999.

The product of its digits is 2592, while the sum is 28.

Adding to 133112232113221 its reverse (122311232211331), we get a palindrome (255423464324552).

The spelling of 133112232113221 in words is "one hundred thirty-three trillion, one hundred twelve billion, two hundred thirty-two million, one hundred thirteen thousand, two hundred twenty-one".