11120120111221 has 48 divisors (see below), whose sum is σ = 12773005439040. Its totient is φ = 9666451872000.

The previous prime is 11120120111209. The next prime is 11120120111249. The reversal of 11120120111221 is 12211102102111.

It is not a de Polignac number, because 11120120111221 - 2¹¹ = 11120120109173 is a prime.

It is a super-2 number, since 2×11120120111221² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 11120120111195 and 11120120111204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11120120111291) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 46650886 + ... + 46888648.

It is an arithmetic number, because the mean of its divisors is an integer number (266104279980).

Almost surely, 2^{11120120111221} is an apocalyptic number.

11120120111221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

11120120111221 is a deficient number, since it is larger than the sum of its proper divisors (1652885327819).

11120120111221 is a wasteful number, since it uses less digits than its factorization.

11120120111221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 238018 (or 238007 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 16.

Adding to 11120120111221 its reverse (12211102102111), we get a palindrome (23331222213332).

The spelling of 11120120111221 in words is "eleven trillion, one hundred twenty billion, one hundred twenty million, one hundred eleven thousand, two hundred twenty-one".