11121122201121 has 12 divisors (see below), whose sum is σ = 16065968405760. Its totient is φ = 7413100593720.

The previous prime is 11121122201099. The next prime is 11121122201141. The reversal of 11121122201121 is 12110222112111.

It is a happy number.

11121122201121 is a `hidden beast` number, since 111 + 211 + 2 + 220 + 1 + 121 = 666.

It is not a de Polignac number, because 11121122201121 - 2³⁸ = 10846244294177 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11121122201094 and 11121122201103.

It is not an unprimeable number, because it can be changed into a prime (11121122201141) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 81667665 + ... + 81803726.

It is an arithmetic number, because the mean of its divisors is an integer number (1338830700480).

Almost surely, 2^{11121122201121} is an apocalyptic number.

It is an amenable number.

11121122201121 is a deficient number, since it is larger than the sum of its proper divisors (4944846204639).

11121122201121 is a wasteful number, since it uses less digits than its factorization.

11121122201121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163478956 (or 163478953 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 18.

Adding to 11121122201121 its reverse (12110222112111), we get a palindrome (23231344313232).

The spelling of 11121122201121 in words is "eleven trillion, one hundred twenty-one billion, one hundred twenty-two million, two hundred one thousand, one hundred twenty-one".