13321212122213 has 4 divisors (see below), whose sum is σ = 13321280308140. Its totient is φ = 13321143936288.

The previous prime is 13321212122189. The next prime is 13321212122243. The reversal of 13321212122213 is 31222121212331.

13321212122213 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 4261491378244 + 9059720743969 = 2064338^2 + 3009937^2 .

It is a cyclic number.

It is not a de Polignac number, because 13321212122213 - 2⁴² = 8923165611109 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 (13321212122243) 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, 33799070 + ... + 34190927.

It is an arithmetic number, because the mean of its divisors is an integer number (3330320077035).

Almost surely, 2^{13321212122213} is an apocalyptic number.

It is an amenable number.

13321212122213 is a deficient number, since it is larger than the sum of its proper divisors (68185927).

13321212122213 is an equidigital number, since it uses as much as digits as its factorization.

13321212122213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68185926.

The product of its digits is 1728, while the sum is 26.

Adding to 13321212122213 its reverse (31222121212331), we get a palindrome (44543333334544).

The spelling of 13321212122213 in words is "thirteen trillion, three hundred twenty-one billion, two hundred twelve million, one hundred twenty-two thousand, two hundred thirteen".