13121013120001 has 4 divisors (see below), whose sum is σ = 13141292893632. Its totient is φ = 13100733346372.

The previous prime is 13121013119989. The next prime is 13121013120011. The reversal of 13121013120001 is 10002131012131.

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 13121013120001 - 2²¹ = 13121011022849 is a prime.

It is a super-3 number, since 3×13121013120001³ (a number of 40 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13121013120011) 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, 10139885845 + ... + 10139887138.

It is an arithmetic number, because the mean of its divisors is an integer number (3285323223408).

Almost surely, 2^{13121013120001} is an apocalyptic number.

It is an amenable number.

13121013120001 is a deficient number, since it is larger than the sum of its proper divisors (20279773631).

13121013120001 is an equidigital number, since it uses as much as digits as its factorization.

13121013120001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20279773630.

The product of its (nonzero) digits is 36, while the sum is 16.

Adding to 13121013120001 its reverse (10002131012131), we get a palindrome (23123144132132).

The spelling of 13121013120001 in words is "thirteen trillion, one hundred twenty-one billion, thirteen million, one hundred twenty thousand, one".