133230111311221 has 4 divisors (see below), whose sum is σ = 133230239381772. Its totient is φ = 133229983240672.

The previous prime is 133230111311197. The next prime is 133230111311249. The reversal of 133230111311221 is 122113111032331.

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 117520668083025 + 15709443228196 = 10840695^2 + 3963514^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-133230111311221 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133230111371221) 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, 62461960 + ... + 64559713.

It is an arithmetic number, because the mean of its divisors is an integer number (33307559845443).

Almost surely, 2^{133230111311221} is an apocalyptic number.

It is an amenable number.

133230111311221 is a deficient number, since it is larger than the sum of its proper divisors (128070551).

133230111311221 is a wasteful number, since it uses less digits than its factorization.

133230111311221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128070550.

The product of its (nonzero) digits is 648, while the sum is 25.

Adding to 133230111311221 its reverse (122113111032331), we get a palindrome (255343222343552).

The spelling of 133230111311221 in words is "one hundred thirty-three trillion, two hundred thirty billion, one hundred eleven million, three hundred eleven thousand, two hundred twenty-one".