13122231022312 has 8 divisors (see below), whose sum is σ = 24604183166850. Its totient is φ = 6561115511152.

The previous prime is 13122231022309. The next prime is 13122231022319. The reversal of 13122231022312 is 21322013222131.

It can be written as a sum of positive squares in only one way, i.e., 9862451326116 + 3259779696196 = 3140454^2 + 1805486^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (13122231022319) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 820139438887 + ... + 820139438902.

Almost surely, 2^{13122231022312} is an apocalyptic number.

It is an amenable number.

13122231022312 is a deficient number, since it is larger than the sum of its proper divisors (11481952144538).

13122231022312 is a wasteful number, since it uses less digits than its factorization.

13122231022312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1640278877795 (or 1640278877791 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 25.

Adding to 13122231022312 its reverse (21322013222131), we get a palindrome (34444244244443).

The spelling of 13122231022312 in words is "thirteen trillion, one hundred twenty-two billion, two hundred thirty-one million, twenty-two thousand, three hundred twelve".