1213433042057 has 2 divisors, whose sum is σ = 1213433042058. Its totient is φ = 1213433042056.

The previous prime is 1213433042009. The next prime is 1213433042083. The reversal of 1213433042057 is 7502403343121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1052452343881 + 160980698176 = 1025891^2 + 401224^2 .

It is a cyclic number.

It is not a de Polignac number, because 1213433042057 - 2²² = 1213428847753 is a prime.

It is not a weakly prime, because it can be changed into another prime (1213433042557) 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, 606716521028 + 606716521029.

It is an arithmetic number, because the mean of its divisors is an integer number (606716521029).

Almost surely, 2^{1213433042057} is an apocalyptic number.

It is an amenable number.

1213433042057 is a deficient number, since it is larger than the sum of its proper divisors (1).

1213433042057 is an equidigital number, since it uses as much as digits as its factorization.

1213433042057 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 60480, while the sum is 35.

Adding to 1213433042057 its reverse (7502403343121), we get a palindrome (8715836385178).

The spelling of 1213433042057 in words is "one trillion, two hundred thirteen billion, four hundred thirty-three million, forty-two thousand, fifty-seven".