133312220033221 has 4 divisors (see below), whose sum is σ = 134206932919500. Its totient is φ = 132417507146944.

The previous prime is 133312220033219. The next prime is 133312220033273. The reversal of 133312220033221 is 122330022213331.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 60575867302500 + 72736352730721 = 7783050^2 + 8528561^2 .

It is a cyclic number.

It is not a de Polignac number, because 133312220033221 - 2¹ = 133312220033219 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 133312220033221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133312220033281) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 447356442916 + ... + 447356443213.

It is an arithmetic number, because the mean of its divisors is an integer number (33551733229875).

Almost surely, 2^{133312220033221} is an apocalyptic number.

It is an amenable number.

133312220033221 is a deficient number, since it is larger than the sum of its proper divisors (894712886279).

133312220033221 is an equidigital number, since it uses as much as digits as its factorization.

133312220033221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 894712886278.

The product of its (nonzero) digits is 7776, while the sum is 28.

Adding to 133312220033221 its reverse (122330022213331), we get a palindrome (255642242246552).

The spelling of 133312220033221 in words is "one hundred thirty-three trillion, three hundred twelve billion, two hundred twenty million, thirty-three thousand, two hundred twenty-one".