11533327221771 has 8 divisors (see below), whose sum is σ = 17086410698960. Its totient is φ = 7688884814496.

The previous prime is 11533327221751. The next prime is 11533327221809. The reversal of 11533327221771 is 17712272333511.

11533327221771 is a `hidden beast` number, since 1 + 1 + 5 + 33 + 327 + 221 + 7 + 71 = 666.

It is not a de Polignac number, because 11533327221771 - 2⁷ = 11533327221643 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11533327221751) 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, 213580133710 + ... + 213580133763.

It is an arithmetic number, because the mean of its divisors is an integer number (2135801337370).

Almost surely, 2^{11533327221771} is an apocalyptic number.

11533327221771 is a deficient number, since it is larger than the sum of its proper divisors (5553083477189).

11533327221771 is an equidigital number, since it uses as much as digits as its factorization.

11533327221771 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 427160267482 (or 427160267476 counting only the distinct ones).

The product of its digits is 370440, while the sum is 45.

The spelling of 11533327221771 in words is "eleven trillion, five hundred thirty-three billion, three hundred twenty-seven million, two hundred twenty-one thousand, seven hundred seventy-one".