11121130566021 has 16 divisors (see below), whose sum is σ = 17493145468928. Its totient is φ = 6149933953200.

The previous prime is 11121130565977. The next prime is 11121130566037. The reversal of 11121130566021 is 12066503112111.

It is not a de Polignac number, because 11121130566021 - 2²¹ = 11121128468869 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 11121130566021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11121130566061) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8541574285 + ... + 8541575586.

It is an arithmetic number, because the mean of its divisors is an integer number (1093321591808).

Almost surely, 2^{11121130566021} is an apocalyptic number.

It is an amenable number.

11121130566021 is a deficient number, since it is larger than the sum of its proper divisors (6372014902907).

11121130566021 is a wasteful number, since it uses less digits than its factorization.

11121130566021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17083149912.

The product of its (nonzero) digits is 2160, while the sum is 30.

Adding to 11121130566021 its reverse (12066503112111), we get a palindrome (23187633678132).

The spelling of 11121130566021 in words is "eleven trillion, one hundred twenty-one billion, one hundred thirty million, five hundred sixty-six thousand, twenty-one".