11321000012 has 12 divisors (see below), whose sum is σ = 22642000080. Its totient is φ = 4851857136.

The previous prime is 11321000011. The next prime is 11321000017. The reversal of 11321000012 is 21000012311.

11321000012 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 11320999957 and 11321000002.

It is not an unprimeable number, because it can be changed into a prime (11321000011) 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, 202160687 + ... + 202160742.

It is an arithmetic number, because the mean of its divisors is an integer number (1886833340).

Almost surely, 2^11321000012 is an apocalyptic number.

It is an amenable number.

11321000012 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11321000012 is a wasteful number, since it uses less digits than its factorization.

11321000012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 404321440 (or 404321438 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 11.

Adding to 11321000012 its reverse (21000012311), we get a palindrome (32321012323).

The spelling of 11321000012 in words is "eleven billion, three hundred twenty-one million, twelve", and thus it is an aban number.