11321000000001 has 24 divisors (see below), whose sum is σ = 16805766093480. Its totient is φ = 7338432508416.

The previous prime is 11320999999957. The next prime is 11321000000003. The reversal of 11321000000001 is 10000000012311.

It can be written as a sum of positive squares in 4 ways, for example, as 3082837151601 + 8238162848400 = 1755801^2 + 2870220^2 .

It is not a de Polignac number, because 11321000000001 - 2⁶ = 11320999999937 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a self number, because there is not a number n which added to its sum of digits gives 11321000000001.

It is not an unprimeable number, because it can be changed into a prime (11321000000003) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10888296 + ... + 11882633.

It is an arithmetic number, because the mean of its divisors is an integer number (700240253895).

Almost surely, 2^{11321000000001} is an apocalyptic number.

It is an amenable number.

11321000000001 is a deficient number, since it is larger than the sum of its proper divisors (5484766093479).

11321000000001 is a wasteful number, since it uses less digits than its factorization.

11321000000001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22772465 (or 22772462 counting only the distinct ones).

The product of its (nonzero) digits is 6, while the sum is 9.

Adding to 11321000000001 its reverse (10000000012311), we get a palindrome (21321000012312).

The spelling of 11321000000001 in words is "eleven trillion, three hundred twenty-one billion, one", and thus it is an aban number.