11220201221 has 8 divisors (see below), whose sum is σ = 11308809600. Its totient is φ = 11131637920.

The previous prime is 11220201211. The next prime is 11220201241. The reversal of 11220201221 is 12210202211.

11220201221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 11220201221 - 2¹⁰ = 11220200197 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 11220201196 and 11220201205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11220201211) 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 7 ways as a sum of consecutive naturals, for example, 631700 + ... + 649218.

It is an arithmetic number, because the mean of its divisors is an integer number (1413601200).

Almost surely, 2^11220201221 is an apocalyptic number.

It is an amenable number.

11220201221 is a deficient number, since it is larger than the sum of its proper divisors (88608379).

11220201221 is a wasteful number, since it uses less digits than its factorization.

11220201221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22539.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 11220201221 its reverse (12210202211), we get a palindrome (23430403432).

The spelling of 11220201221 in words is "eleven billion, two hundred twenty million, two hundred one thousand, two hundred twenty-one".