133565215336221 has 8 divisors (see below), whose sum is σ = 178087076821984. Its totient is φ = 89043415370640.

The previous prime is 133565215336207. The next prime is 133565215336271. The reversal of 133565215336221 is 122633512565331.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 133565215336221 - 2¹⁰ = 133565215335197 is a prime.

It is a super-2 number, since 2×133565215336221² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133565215336271) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10050346 + ... + 19186971.

It is an arithmetic number, because the mean of its divisors is an integer number (22260884602748).

Almost surely, 2^{133565215336221} is an apocalyptic number.

It is an amenable number.

133565215336221 is a deficient number, since it is larger than the sum of its proper divisors (44521861485763).

133565215336221 is a wasteful number, since it uses less digits than its factorization.

133565215336221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30760091.

The product of its digits is 2916000, while the sum is 48.

The spelling of 133565215336221 in words is "one hundred thirty-three trillion, five hundred sixty-five billion, two hundred fifteen million, three hundred thirty-six thousand, two hundred twenty-one".