1312221022043 has 2 divisors, whose sum is σ = 1312221022044. Its totient is φ = 1312221022042.

The previous prime is 1312221022039. The next prime is 1312221022159. The reversal of 1312221022043 is 3402201222131.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1312221022043 - 2² = 1312221022039 is a prime.

It is not a weakly prime, because it can be changed into another prime (1312221022033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 656110511021 + 656110511022.

It is an arithmetic number, because the mean of its divisors is an integer number (656110511022).

Almost surely, 2^{1312221022043} is an apocalyptic number.

1312221022043 is a deficient number, since it is larger than the sum of its proper divisors (1).

1312221022043 is an equidigital number, since it uses as much as digits as its factorization.

1312221022043 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 1312221022043 its reverse (3402201222131), we get a palindrome (4714422244174).

The spelling of 1312221022043 in words is "one trillion, three hundred twelve billion, two hundred twenty-one million, twenty-two thousand, forty-three".