221011112111201 has 16 divisors (see below), whose sum is σ = 222088370400000. Its totient is φ = 219936959424000.

The previous prime is 221011112111177. The next prime is 221011112111261. The reversal of 221011112111201 is 102111211110122.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-221011112111201 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 221011112111201.

It is not an unprimeable number, because it can be changed into a prime (221011112111261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 331500056 + ... + 332166086.

It is an arithmetic number, because the mean of its divisors is an integer number (13880523150000).

Almost surely, 2^{221011112111201} is an apocalyptic number.

It is an amenable number.

221011112111201 is a deficient number, since it is larger than the sum of its proper divisors (1077258288799).

221011112111201 is a wasteful number, since it uses less digits than its factorization.

221011112111201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 668360.

The product of its (nonzero) digits is 16, while the sum is 17.

Adding to 221011112111201 its reverse (102111211110122), we get a palindrome (323122323221323).

The spelling of 221011112111201 in words is "two hundred twenty-one trillion, eleven billion, one hundred twelve million, one hundred eleven thousand, two hundred one".