12011320100005 has 4 divisors (see below), whose sum is σ = 14413584120012. Its totient is φ = 9609056080000.

The previous prime is 12011320099871. The next prime is 12011320100089. The reversal of 12011320100005 is 50000102311021.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3283514330209 + 8727805769796 = 1812047^2 + 2954286^2 .

It is a de Polignac number, because none of the positive numbers 2^k-12011320100005 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1201132009996 + ... + 1201132010005.

It is an arithmetic number, because the mean of its divisors is an integer number (3603396030003).

Almost surely, 2^{12011320100005} is an apocalyptic number.

It is an amenable number.

12011320100005 is a deficient number, since it is larger than the sum of its proper divisors (2402264020007).

12011320100005 is an equidigital number, since it uses as much as digits as its factorization.

12011320100005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2402264020006.

The product of its (nonzero) digits is 60, while the sum is 16.

Adding to 12011320100005 its reverse (50000102311021), we get a palindrome (62011422411026).

The spelling of 12011320100005 in words is "twelve trillion, eleven billion, three hundred twenty million, one hundred thousand, five".