13121440220001 has 8 divisors (see below), whose sum is σ = 17584062021504. Its totient is φ = 8703222615920.

The previous prime is 13121440219919. The next prime is 13121440220011. The reversal of 13121440220001 is 10002204412131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 13121440220001 - 2¹⁰ = 13121440218977 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 13121440220001.

It is not an unprimeable number, because it can be changed into a prime (13121440220011) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11101048665 + ... + 11101049846.

It is an arithmetic number, because the mean of its divisors is an integer number (2198007752688).

Almost surely, 2^{13121440220001} is an apocalyptic number.

It is an amenable number.

13121440220001 is a deficient number, since it is larger than the sum of its proper divisors (4462621801503).

13121440220001 is a wasteful number, since it uses less digits than its factorization.

13121440220001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22202098711.

The product of its (nonzero) digits is 384, while the sum is 21.

Adding to 13121440220001 its reverse (10002204412131), we get a palindrome (23123644632132).

The spelling of 13121440220001 in words is "thirteen trillion, one hundred twenty-one billion, four hundred forty million, two hundred twenty thousand, one".