13311121002221 has 8 divisors (see below), whose sum is σ = 15499741976064. Its totient is φ = 11194258093200.

The previous prime is 13311121002191. The next prime is 13311121002253. The reversal of 13311121002221 is 12220012111331.

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

It is not a de Polignac number, because 13311121002221 - 2²² = 13311116807917 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13311121002193 and 13311121002202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13311121002121) 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, 17939515805 + ... + 17939516546.

It is an arithmetic number, because the mean of its divisors is an integer number (1937467747008).

Almost surely, 2^{13311121002221} is an apocalyptic number.

It is an amenable number.

13311121002221 is a deficient number, since it is larger than the sum of its proper divisors (2188620973843).

13311121002221 is an equidigital number, since it uses as much as digits as its factorization.

13311121002221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35879032411.

The product of its (nonzero) digits is 144, while the sum is 20.

Adding to 13311121002221 its reverse (12220012111331), we get a palindrome (25531133113552).

The spelling of 13311121002221 in words is "thirteen trillion, three hundred eleven billion, one hundred twenty-one million, two thousand, two hundred twenty-one".