11200206721 has 8 divisors (see below), whose sum is σ = 12612549888. Its totient is φ = 9853554000.

The previous prime is 11200206709. The next prime is 11200206779. The reversal of 11200206721 is 12760200211.

It is a happy number.

11200206721 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 11200206721 - 2⁹ = 11200206209 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11200206692 and 11200206701.

It is not an unprimeable number, because it can be changed into a prime (11200216721) 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, 16422250 + ... + 16422931.

It is an arithmetic number, because the mean of its divisors is an integer number (1576568736).

Almost surely, 2^11200206721 is an apocalyptic number.

11200206721 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

11200206721 is a deficient number, since it is larger than the sum of its proper divisors (1412343167).

11200206721 is a wasteful number, since it uses less digits than its factorization.

11200206721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32845223.

The product of its (nonzero) digits is 336, while the sum is 22.

Adding to 11200206721 its reverse (12760200211), we get a palindrome (23960406932).

The spelling of 11200206721 in words is "eleven billion, two hundred million, two hundred six thousand, seven hundred twenty-one".