1312223222143 has 2 divisors, whose sum is σ = 1312223222144. Its totient is φ = 1312223222142.

The previous prime is 1312223222131. The next prime is 1312223222153. The reversal of 1312223222143 is 3412223222131.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1312223222143 - 2⁵ = 1312223222111 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1312223222153) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 656111611071 + 656111611072.

It is an arithmetic number, because the mean of its divisors is an integer number (656111611072).

Almost surely, 2^{1312223222143} is an apocalyptic number.

1312223222143 is a deficient number, since it is larger than the sum of its proper divisors (1).

1312223222143 is an equidigital number, since it uses as much as digits as its factorization.

1312223222143 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6912, while the sum is 28.

Adding to 1312223222143 its reverse (3412223222131), we get a palindrome (4724446444274).

The spelling of 1312223222143 in words is "one trillion, three hundred twelve billion, two hundred twenty-three million, two hundred twenty-two thousand, one hundred forty-three".