1312444122213 has 16 divisors (see below), whose sum is σ = 1999931131520. Its totient is φ = 749961965376.

The previous prime is 1312444122211. The next prime is 1312444122217. The reversal of 1312444122213 is 3122214442131.

It is a happy number.

It is not a de Polignac number, because 1312444122213 - 2¹ = 1312444122211 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1312444122211) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4206231 + ... + 4507467.

It is an arithmetic number, because the mean of its divisors is an integer number (124995695720).

Almost surely, 2^{1312444122213} is an apocalyptic number.

It is an amenable number.

1312444122213 is a deficient number, since it is larger than the sum of its proper divisors (687487009307).

1312444122213 is a wasteful number, since it uses less digits than its factorization.

1312444122213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 508716.

The product of its digits is 9216, while the sum is 30.

Adding to 1312444122213 its reverse (3122214442131), we get a palindrome (4434658564344).

The spelling of 1312444122213 in words is "one trillion, three hundred twelve billion, four hundred forty-four million, one hundred twenty-two thousand, two hundred thirteen".