11555067052221 has 64 divisors (see below), whose sum is σ = 19307925504000. Its totient is φ = 5971547102400.

The previous prime is 11555067052211. The next prime is 11555067052223. The reversal of 11555067052221 is 12225076055511.

11555067052221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 11555067052221 - 2¹³ = 11555067044029 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11555067052223) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 378355570 + ... + 378386108.

It is an arithmetic number, because the mean of its divisors is an integer number (301686336000).

Almost surely, 2^{11555067052221} is an apocalyptic number.

11555067052221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

11555067052221 is a deficient number, since it is larger than the sum of its proper divisors (7752858451779).

11555067052221 is a wasteful number, since it uses less digits than its factorization.

11555067052221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38990.

The product of its (nonzero) digits is 210000, while the sum is 42.

The spelling of 11555067052221 in words is "eleven trillion, five hundred fifty-five billion, sixty-seven million, fifty-two thousand, two hundred twenty-one".