11201131211 has 8 divisors (see below), whose sum is σ = 11224103904. Its totient is φ = 11178177280.

The previous prime is 11201131177. The next prime is 11201131231. The reversal of 11201131211 is 11213110211.

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-11201131211 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11201131231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1964681 + ... + 1970373.

It is an arithmetic number, because the mean of its divisors is an integer number (1403012988).

Almost surely, 2^11201131211 is an apocalyptic number.

11201131211 is a deficient number, since it is larger than the sum of its proper divisors (22972693).

11201131211 is an equidigital number, since it uses as much as digits as its factorization.

11201131211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9381.

The product of its (nonzero) digits is 12, while the sum is 14.

Adding to 11201131211 its reverse (11213110211), we get a palindrome (22414241422).

The spelling of 11201131211 in words is "eleven billion, two hundred one million, one hundred thirty-one thousand, two hundred eleven".