221708543143 has 2 divisors, whose sum is σ = 221708543144. Its totient is φ = 221708543142.

The previous prime is 221708543131. The next prime is 221708543179. The reversal of 221708543143 is 341345807122.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 221708543143 - 2¹³ = 221708534951 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 221708543096 and 221708543105.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (221708543543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110854271571 + 110854271572.

It is an arithmetic number, because the mean of its divisors is an integer number (110854271572).

Almost surely, 2^221708543143 is an apocalyptic number.

221708543143 is a deficient number, since it is larger than the sum of its proper divisors (1).

221708543143 is an equidigital number, since it uses as much as digits as its factorization.

221708543143 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 161280, while the sum is 40.

The spelling of 221708543143 in words is "two hundred twenty-one billion, seven hundred eight million, five hundred forty-three thousand, one hundred forty-three".