143321021057 has 2 divisors, whose sum is σ = 143321021058. Its totient is φ = 143321021056.

The previous prime is 143321021009. The next prime is 143321021093. The reversal of 143321021057 is 750120123341.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 140625750001 + 2695271056 = 375001^2 + 51916^2 .

It is a cyclic number.

It is not a de Polignac number, because 143321021057 - 2¹⁸ = 143320758913 is a prime.

It is not a weakly prime, because it can be changed into another prime (143321023057) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71660510528 + 71660510529.

It is an arithmetic number, because the mean of its divisors is an integer number (71660510529).

Almost surely, 2^143321021057 is an apocalyptic number.

It is an amenable number.

143321021057 is a deficient number, since it is larger than the sum of its proper divisors (1).

143321021057 is an equidigital number, since it uses as much as digits as its factorization.

143321021057 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5040, while the sum is 29.

Adding to 143321021057 its reverse (750120123341), we get a palindrome (893441144398).

The spelling of 143321021057 in words is "one hundred forty-three billion, three hundred twenty-one million, twenty-one thousand, fifty-seven".