11121220201201 has 16 divisors (see below), whose sum is σ = 12253545900288. Its totient is φ = 10009131472000.

The previous prime is 11121220201193. The next prime is 11121220201237. The reversal of 11121220201201 is 10210202212111.

It is a cyclic number.

It is not a de Polignac number, because 11121220201201 - 2³ = 11121220201193 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11121220201601) 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, 11139096 + ... + 12096358.

It is an arithmetic number, because the mean of its divisors is an integer number (765846618768).

Almost surely, 2^{11121220201201} is an apocalyptic number.

11121220201201 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

11121220201201 is a deficient number, since it is larger than the sum of its proper divisors (1132325699087).

11121220201201 is a wasteful number, since it uses less digits than its factorization.

11121220201201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 967832.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 11121220201201 its reverse (10210202212111), we get a palindrome (21331422413312).

The spelling of 11121220201201 in words is "eleven trillion, one hundred twenty-one billion, two hundred twenty million, two hundred one thousand, two hundred one".