11201122220121 has 16 divisors (see below), whose sum is σ = 16596583137600. Its totient is φ = 7466367214944.

The previous prime is 11201122220117. The next prime is 11201122220179. The reversal of 11201122220121 is 12102222110211.

11201122220121 is a `hidden beast` number, since 1 + 1 + 201 + 122 + 220 + 121 = 666.

It is not a de Polignac number, because 11201122220121 - 2² = 11201122220117 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11201122220094 and 11201122220103.

It is not an unprimeable number, because it can be changed into a prime (11201122220021) 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, 28903911 + ... + 29288876.

It is an arithmetic number, because the mean of its divisors is an integer number (1037286446100).

Almost surely, 2^{11201122220121} is an apocalyptic number.

It is an amenable number.

11201122220121 is a deficient number, since it is larger than the sum of its proper divisors (5395460917479).

11201122220121 is an equidigital number, since it uses as much as digits as its factorization.

11201122220121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58199925 (or 58199919 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 11201122220121 its reverse (12102222110211), we get a palindrome (23303344330332).

The spelling of 11201122220121 in words is "eleven trillion, two hundred one billion, one hundred twenty-two million, two hundred twenty thousand, one hundred twenty-one".