13312121220001 has 16 divisors (see below), whose sum is σ = 13421036724480. Its totient is φ = 13203399200400.

The previous prime is 13312121219977. The next prime is 13312121220019. The reversal of 13312121220001 is 10002212121331.

It is a cyclic number.

It is not a de Polignac number, because 13312121220001 - 2²³ = 13312112831393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13312121220901) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 904164426 + ... + 904179148.

It is an arithmetic number, because the mean of its divisors is an integer number (838814795280).

Almost surely, 2^{13312121220001} is an apocalyptic number.

It is an amenable number.

13312121220001 is a deficient number, since it is larger than the sum of its proper divisors (108915504479).

13312121220001 is a wasteful number, since it uses less digits than its factorization.

13312121220001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20796.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 13312121220001 its reverse (10002212121331), we get a palindrome (23314333341332).

The spelling of 13312121220001 in words is "thirteen trillion, three hundred twelve billion, one hundred twenty-one million, two hundred twenty thousand, one".