1213422321213 has 12 divisors (see below), whose sum is σ = 1809260522368. Its totient is φ = 782853110280.

The previous prime is 1213422321191. The next prime is 1213422321229. The reversal of 1213422321213 is 3121232243121.

1213422321213 is a `hidden beast` number, since 1 + 2 + 1 + 3 + 422 + 3 + 21 + 213 = 666.

It is not a de Polignac number, because 1213422321213 - 2¹³ = 1213422313021 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1213422321263) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2174591695 + ... + 2174592252.

Almost surely, 2^{1213422321213} is an apocalyptic number.

It is an amenable number.

1213422321213 is a deficient number, since it is larger than the sum of its proper divisors (595838201155).

1213422321213 is a wasteful number, since it uses less digits than its factorization.

1213422321213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4349183984 (or 4349183981 counting only the distinct ones).

The product of its digits is 3456, while the sum is 27.

Adding to 1213422321213 its reverse (3121232243121), we get a palindrome (4334654564334).

The spelling of 1213422321213 in words is "one trillion, two hundred thirteen billion, four hundred twenty-two million, three hundred twenty-one thousand, two hundred thirteen".