1213443114677 has 2 divisors, whose sum is σ = 1213443114678. Its totient is φ = 1213443114676.

The previous prime is 1213443114617. The next prime is 1213443114679. The reversal of 1213443114677 is 7764113443121.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1078588179601 + 134854935076 = 1038551^2 + 367226^2 .

It is a cyclic number.

It is not a de Polignac number, because 1213443114677 - 2⁶ = 1213443114613 is a prime.

Together with 1213443114679, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1213443114679) by changing a digit.

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 as a sum of consecutive naturals, namely, 606721557338 + 606721557339.

It is an arithmetic number, because the mean of its divisors is an integer number (606721557339).

Almost surely, 2^{1213443114677} is an apocalyptic number.

It is an amenable number.

1213443114677 is a deficient number, since it is larger than the sum of its proper divisors (1).

1213443114677 is an equidigital number, since it uses as much as digits as its factorization.

1213443114677 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 338688, while the sum is 44.

Adding to 1213443114677 its reverse (7764113443121), we get a palindrome (8977556557798).

The spelling of 1213443114677 in words is "one trillion, two hundred thirteen billion, four hundred forty-three million, one hundred fourteen thousand, six hundred seventy-seven".