11201021112221 has 8 divisors (see below), whose sum is σ = 11790585979200. Its totient is φ = 10611459989280.

The previous prime is 11201021112217. The next prime is 11201021112227. The reversal of 11201021112221 is 12221112010211.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11201021112221 - 2² = 11201021112217 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11201021112221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11201021112227) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6877241 + ... + 8348561.

It is an arithmetic number, because the mean of its divisors is an integer number (1473823247400).

Almost surely, 2^{11201021112221} is an apocalyptic number.

It is an amenable number.

11201021112221 is a deficient number, since it is larger than the sum of its proper divisors (589564866979).

11201021112221 is a wasteful number, since it uses less digits than its factorization.

11201021112221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1872019.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 11201021112221 its reverse (12221112010211), we get a palindrome (23422133122432).

It can be divided in two parts, 112010211 and 12221, that multiplied together give a palindrome (1368876788631).

The spelling of 11201021112221 in words is "eleven trillion, two hundred one billion, twenty-one million, one hundred twelve thousand, two hundred twenty-one".