11002231211 has 4 divisors (see below), whose sum is σ = 11002458192. Its totient is φ = 11002004232.

The previous prime is 11002231193. The next prime is 11002231231. The reversal of 11002231211 is 11213220011.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11002231211 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11002231231) 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 3 ways as a sum of consecutive naturals, for example, 8255 + ... + 148568.

It is an arithmetic number, because the mean of its divisors is an integer number (2750614548).

Almost surely, 2^11002231211 is an apocalyptic number.

11002231211 is a deficient number, since it is larger than the sum of its proper divisors (226981).

11002231211 is an equidigital number, since it uses as much as digits as its factorization.

11002231211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 226980.

The product of its (nonzero) digits is 24, while the sum is 14.

Adding to 11002231211 its reverse (11213220011), we get a palindrome (22215451222).

The spelling of 11002231211 in words is "eleven billion, two million, two hundred thirty-one thousand, two hundred eleven".