11321211001231 has 32 divisors (see below), whose sum is σ = 11832518670336. Its totient is φ = 10822530528000.

The previous prime is 11321211001189. The next prime is 11321211001327. The reversal of 11321211001231 is 13210011212311.

It is a cyclic number.

It is not a de Polignac number, because 11321211001231 - 2⁷ = 11321211001103 is a prime.

It is a super-2 number, since 2×11321211001231² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11321211001199 and 11321211001208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11321211001031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1713514330 + ... + 1713520936.

It is an arithmetic number, because the mean of its divisors is an integer number (369766208448).

Almost surely, 2^{11321211001231} is an apocalyptic number.

11321211001231 is a deficient number, since it is larger than the sum of its proper divisors (511307669105).

11321211001231 is a wasteful number, since it uses less digits than its factorization.

11321211001231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9223.

The product of its (nonzero) digits is 72, while the sum is 19.

Adding to 11321211001231 its reverse (13210011212311), we get a palindrome (24531222213542).

The spelling of 11321211001231 in words is "eleven trillion, three hundred twenty-one billion, two hundred eleven million, one thousand, two hundred thirty-one".