11211312011 has 8 divisors (see below), whose sum is σ = 11230771200. Its totient is φ = 11191870440.

The previous prime is 11211312001. The next prime is 11211312023. The reversal of 11211312011 is 11021311211.

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

It is a cyclic number.

It is not a de Polignac number, because 11211312011 - 2¹⁸ = 11211049867 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11211312001) 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, 1937120 + ... + 1942898.

It is an arithmetic number, because the mean of its divisors is an integer number (1403846400).

Almost surely, 2^11211312011 is an apocalyptic number.

11211312011 is a deficient number, since it is larger than the sum of its proper divisors (19459189).

11211312011 is an equidigital number, since it uses as much as digits as its factorization.

11211312011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8809.

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

Adding to 11211312011 its reverse (11021311211), we get a palindrome (22232623222).

The spelling of 11211312011 in words is "eleven billion, two hundred eleven million, three hundred twelve thousand, eleven".