143857082221 has 2 divisors, whose sum is σ = 143857082222. Its totient is φ = 143857082220.

The previous prime is 143857082207. The next prime is 143857082233. The reversal of 143857082221 is 122280758341.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 75663504900 + 68193577321 = 275070^2 + 261139^2 .

It is a cyclic number.

It is not a de Polignac number, because 143857082221 - 2²¹ = 143854985069 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (143857082021) 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, 71928541110 + 71928541111.

It is an arithmetic number, because the mean of its divisors is an integer number (71928541111).

Almost surely, 2^143857082221 is an apocalyptic number.

It is an amenable number.

143857082221 is a deficient number, since it is larger than the sum of its proper divisors (1).

143857082221 is an equidigital number, since it uses as much as digits as its factorization.

143857082221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 215040, while the sum is 43.

The spelling of 143857082221 in words is "one hundred forty-three billion, eight hundred fifty-seven million, eighty-two thousand, two hundred twenty-one".