11231124211 has 4 divisors (see below), whose sum is σ = 11302660192. Its totient is φ = 11159588232.

The previous prime is 11231124209. The next prime is 11231124221. The reversal of 11231124211 is 11242113211.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 11231124211 - 2¹ = 11231124209 is a prime.

It is a super-2 number, since 2×11231124211² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11231124221) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35767755 + ... + 35768068.

It is an arithmetic number, because the mean of its divisors is an integer number (2825665048).

Almost surely, 2^11231124211 is an apocalyptic number.

11231124211 is a deficient number, since it is larger than the sum of its proper divisors (71535981).

11231124211 is an equidigital number, since it uses as much as digits as its factorization.

11231124211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71535980.

The product of its digits is 96, while the sum is 19.

Adding to 11231124211 its reverse (11242113211), we get a palindrome (22473237422).

The spelling of 11231124211 in words is "eleven billion, two hundred thirty-one million, one hundred twenty-four thousand, two hundred eleven".