12201231005 has 4 divisors (see below), whose sum is σ = 14641477212. Its totient is φ = 9760984800.

The previous prime is 12201230983. The next prime is 12201231013. The reversal of 12201231005 is 50013210221.

It is a happy number.

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 1268855641 + 10932375364 = 35621^2 + 104558^2 .

It is not a de Polignac number, because 12201231005 - 2⁶ = 12201230941 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, 1220123096 + ... + 1220123105.

It is an arithmetic number, because the mean of its divisors is an integer number (3660369303).

Almost surely, 2^12201231005 is an apocalyptic number.

It is an amenable number.

12201231005 is a deficient number, since it is larger than the sum of its proper divisors (2440246207).

12201231005 is an equidigital number, since it uses as much as digits as its factorization.

12201231005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2440246206.

The product of its (nonzero) digits is 120, while the sum is 17.

Adding to 12201231005 its reverse (50013210221), we get a palindrome (62214441226).

The spelling of 12201231005 in words is "twelve billion, two hundred one million, two hundred thirty-one thousand, five".