11113013111221 has 16 divisors (see below), whose sum is σ = 12710096844928. Its totient is φ = 9518307796800.

The previous prime is 11113013111171. The next prime is 11113013111293. The reversal of 11113013111221 is 12211131031111.

It is a cyclic number.

It is not a de Polignac number, because 11113013111221 - 2¹¹ = 11113013109173 is a prime.

It is a super-2 number, since 2×11113013111221² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11113013111621) 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, 324346231 + ... + 324380491.

It is an arithmetic number, because the mean of its divisors is an integer number (794381052808).

Almost surely, 2^{11113013111221} is an apocalyptic number.

It is an amenable number.

11113013111221 is a deficient number, since it is larger than the sum of its proper divisors (1597083733707).

11113013111221 is a wasteful number, since it uses less digits than its factorization.

11113013111221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67612.

The product of its (nonzero) digits is 36, while the sum is 19.

Adding to 11113013111221 its reverse (12211131031111), we get a palindrome (23324144142332).

The spelling of 11113013111221 in words is "eleven trillion, one hundred thirteen billion, thirteen million, one hundred eleven thousand, two hundred twenty-one".