13021121324212 has 12 divisors (see below), whose sum is σ = 22787012753316. Its totient is φ = 6510546251840.

The previous prime is 13021121324203. The next prime is 13021121324257. The reversal of 13021121324212 is 21242312112031.

It can be written as a sum of positive squares in 2 ways, for example, as 2320607409316 + 10700513914896 = 1523354^2 + 3271164^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1422943 + ... + 5297830.

It is an arithmetic number, because the mean of its divisors is an integer number (1898917729443).

Almost surely, 2^{13021121324212} is an apocalyptic number.

It is an amenable number.

13021121324212 is a deficient number, since it is larger than the sum of its proper divisors (9765891429104).

13021121324212 is a wasteful number, since it uses less digits than its factorization.

13021121324212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7205138 (or 7205136 counting only the distinct ones).

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

Adding to 13021121324212 its reverse (21242312112031), we get a palindrome (34263433436243).

The spelling of 13021121324212 in words is "thirteen trillion, twenty-one billion, one hundred twenty-one million, three hundred twenty-four thousand, two hundred twelve".