13212312001 has 4 divisors (see below), whose sum is σ = 15099785152. Its totient is φ = 11324838852.

The previous prime is 13212311999. The next prime is 13212312011. The reversal of 13212312001 is 10021321231.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 13212312001 - 2¹ = 13212311999 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13212312011) 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, 943736565 + ... + 943736578.

It is an arithmetic number, because the mean of its divisors is an integer number (3774946288).

Almost surely, 2^13212312001 is an apocalyptic number.

It is an amenable number.

13212312001 is a deficient number, since it is larger than the sum of its proper divisors (1887473151).

13212312001 is an equidigital number, since it uses as much as digits as its factorization.

13212312001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1887473150.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 13212312001 its reverse (10021321231), we get a palindrome (23233633232).

The spelling of 13212312001 in words is "thirteen billion, two hundred twelve million, three hundred twelve thousand, one".