13212330213121 has 4 divisors (see below), whose sum is σ = 14228663306452. Its totient is φ = 12195997119792.

The previous prime is 13212330213119. The next prime is 13212330213127. The reversal of 13212330213121 is 12131203321231.

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 7088506880625 + 6123823332496 = 2662425^2 + 2474636^2 .

It is a cyclic number.

It is not a de Polignac number, because 13212330213121 - 2¹ = 13212330213119 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13212330213127) 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, 508166546646 + ... + 508166546671.

It is an arithmetic number, because the mean of its divisors is an integer number (3557165826613).

Almost surely, 2^{13212330213121} is an apocalyptic number.

It is an amenable number.

13212330213121 is a deficient number, since it is larger than the sum of its proper divisors (1016333093331).

13212330213121 is a wasteful number, since it uses less digits than its factorization.

13212330213121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1016333093330.

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

Adding to 13212330213121 its reverse (12131203321231), we get a palindrome (25343533534352).

The spelling of 13212330213121 in words is "thirteen trillion, two hundred twelve billion, three hundred thirty million, two hundred thirteen thousand, one hundred twenty-one".