11321211001211 has 4 divisors (see below), whose sum is σ = 11562087831072. Its totient is φ = 11080334171352.

The previous prime is 11321211001189. The next prime is 11321211001327. The reversal of 11321211001211 is 11210011212311.

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 11321211001211 - 2⁶ = 11321211001147 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11321211001211.

It is not an unprimeable number, because it can be changed into a prime (11321211001811) 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, 120438414860 + ... + 120438414953.

It is an arithmetic number, because the mean of its divisors is an integer number (2890521957768).

Almost surely, 2^{11321211001211} is an apocalyptic number.

11321211001211 is a deficient number, since it is larger than the sum of its proper divisors (240876829861).

11321211001211 is an equidigital number, since it uses as much as digits as its factorization.

11321211001211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 240876829860.

The product of its (nonzero) digits is 24, while the sum is 17.

Adding to 11321211001211 its reverse (11210011212311), we get a palindrome (22531222213522).

The spelling of 11321211001211 in words is "eleven trillion, three hundred twenty-one billion, two hundred eleven million, one thousand, two hundred eleven".