13121210212001 has 4 divisors (see below), whose sum is σ = 13121864754432. Its totient is φ = 13120555669572.

The previous prime is 13121210211997. The next prime is 13121210212013. The reversal of 13121210212001 is 10021201212131.

It is a happy number.

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 13121210212001 - 2² = 13121210211997 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13121210212601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 327241145 + ... + 327281238.

It is an arithmetic number, because the mean of its divisors is an integer number (3280466188608).

Almost surely, 2^{13121210212001} is an apocalyptic number.

It is an amenable number.

13121210212001 is a deficient number, since it is larger than the sum of its proper divisors (654542431).

13121210212001 is an equidigital number, since it uses as much as digits as its factorization.

13121210212001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 654542430.

The product of its (nonzero) digits is 48, while the sum is 17.

Adding to 13121210212001 its reverse (10021201212131), we get a palindrome (23142411424132).

The spelling of 13121210212001 in words is "thirteen trillion, one hundred twenty-one billion, two hundred ten million, two hundred twelve thousand, one".