11221200221 has 8 divisors (see below), whose sum is σ = 13990067904. Its totient is φ = 8743792320.

The previous prime is 11221200209. The next prime is 11221200247. The reversal of 11221200221 is 12200212211.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11221200221 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11221200196 and 11221200205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11221206221) 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, 72864860 + ... + 72865013.

It is an arithmetic number, because the mean of its divisors is an integer number (1748758488).

Almost surely, 2^11221200221 is an apocalyptic number.

11221200221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

11221200221 is a deficient number, since it is larger than the sum of its proper divisors (2768867683).

11221200221 is a wasteful number, since it uses less digits than its factorization.

11221200221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145729891.

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

Adding to 11221200221 its reverse (12200212211), we get a palindrome (23421412432).

The spelling of 11221200221 in words is "eleven billion, two hundred twenty-one million, two hundred thousand, two hundred twenty-one".