13121322212212 has 24 divisors (see below), whose sum is σ = 23755094748000. Its totient is φ = 6334170892896.

The previous prime is 13121322212149. The next prime is 13121322212221. The reversal of 13121322212212 is 21221222312131.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 521539 + ... + 5149237.

It is an arithmetic number, because the mean of its divisors is an integer number (989795614500).

Almost surely, 2^{13121322212212} is an apocalyptic number.

It is an amenable number.

13121322212212 is a deficient number, since it is larger than the sum of its proper divisors (10633772535788).

13121322212212 is a wasteful number, since it uses less digits than its factorization.

13121322212212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4652175 (or 4652173 counting only the distinct ones).

The product of its digits is 1152, while the sum is 25.

Adding to 13121322212212 its reverse (21221222312131), we get a palindrome (34342544524343).

The spelling of 13121322212212 in words is "thirteen trillion, one hundred twenty-one billion, three hundred twenty-two million, two hundred twelve thousand, two hundred twelve".