13333012112221 has 4 divisors (see below), whose sum is σ = 13333031031132. Its totient is φ = 13332993193312.

The previous prime is 13333012112207. The next prime is 13333012112243. The reversal of 13333012112221 is 12221121033331.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 6782842063321 + 6550170048900 = 2604389^2 + 2559330^2 .

It is a cyclic number.

It is not a de Polignac number, because 13333012112221 - 2¹³ = 13333012104029 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13333012112521) 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, 8359720 + ... + 9826033.

It is an arithmetic number, because the mean of its divisors is an integer number (3333257757783).

Almost surely, 2^{13333012112221} is an apocalyptic number.

It is an amenable number.

13333012112221 is a deficient number, since it is larger than the sum of its proper divisors (18918911).

13333012112221 is an equidigital number, since it uses as much as digits as its factorization.

13333012112221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18918910.

The product of its (nonzero) digits is 1296, while the sum is 25.

Adding to 13333012112221 its reverse (12221121033331), we get a palindrome (25554133145552).

The spelling of 13333012112221 in words is "thirteen trillion, three hundred thirty-three billion, twelve million, one hundred twelve thousand, two hundred twenty-one".