11200231221 has 8 divisors (see below), whose sum is σ = 14943177984. Its totient is φ = 7462052640.

The previous prime is 11200231181. The next prime is 11200231243. The reversal of 11200231221 is 12213200211.

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

It is a de Polignac number, because none of the positive numbers 2^k-11200231221 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11200231221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11200231291) 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, 1186560 + ... + 1195961.

It is an arithmetic number, because the mean of its divisors is an integer number (1867897248).

Almost surely, 2^11200231221 is an apocalyptic number.

It is an amenable number.

11200231221 is a deficient number, since it is larger than the sum of its proper divisors (3742946763).

11200231221 is a wasteful number, since it uses less digits than its factorization.

11200231221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2384091.

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 11200231221 its reverse (12213200211), we get a palindrome (23413431432).

The spelling of 11200231221 in words is "eleven billion, two hundred million, two hundred thirty-one thousand, two hundred twenty-one".