11221200231 has 32 divisors (see below), whose sum is σ = 16037222400. Its totient is φ = 6963411840.

The previous prime is 11221200209. The next prime is 11221200247. The reversal of 11221200231 is 13200212211.

It is not a de Polignac number, because 11221200231 - 2⁶ = 11221200167 is a prime.

It is a super-2 number, since 2×11221200231² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 11221200231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11221204231) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 717760 + ... + 733226.

It is an arithmetic number, because the mean of its divisors is an integer number (501163200).

Almost surely, 2^11221200231 is an apocalyptic number.

11221200231 is a deficient number, since it is larger than the sum of its proper divisors (4816022169).

11221200231 is a wasteful number, since it uses less digits than its factorization.

11221200231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15799.

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

Adding to 11221200231 its reverse (13200212211), we get a palindrome (24421412442).

The spelling of 11221200231 in words is "eleven billion, two hundred twenty-one million, two hundred thousand, two hundred thirty-one".