13121333212 has 24 divisors (see below), whose sum is σ = 25303756016. Its totient is φ = 5915161728.

The previous prime is 13121333207. The next prime is 13121333221. The reversal of 13121333212 is 21233312131.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2931873 + ... + 2936344.

Almost surely, 2^13121333212 is an apocalyptic number.

It is an amenable number.

13121333212 is a deficient number, since it is larger than the sum of its proper divisors (12182422804).

13121333212 is a wasteful number, since it uses less digits than its factorization.

13121333212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5868277 (or 5868275 counting only the distinct ones).

The product of its digits is 648, while the sum is 22.

Adding to 13121333212 its reverse (21233312131), we get a palindrome (34354645343).

The spelling of 13121333212 in words is "thirteen billion, one hundred twenty-one million, three hundred thirty-three thousand, two hundred twelve".