220221143 has 2 divisors, whose sum is σ = 220221144. Its totient is φ = 220221142.

The previous prime is 220221101. The next prime is 220221149. The reversal of 220221143 is 341122022.

220221143 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 220221143 - 2¹⁴ = 220204759 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (220221149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110110571 + 110110572.

It is an arithmetic number, because the mean of its divisors is an integer number (110110572).

Almost surely, 2^220221143 is an apocalyptic number.

220221143 is a deficient number, since it is larger than the sum of its proper divisors (1).

220221143 is an equidigital number, since it uses as much as digits as its factorization.

220221143 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 220221143 is about 14839.8498307766. The cubic root of 220221143 is about 603.8832784335.

Adding to 220221143 its reverse (341122022), we get a palindrome (561343165).

The spelling of 220221143 in words is "two hundred twenty million, two hundred twenty-one thousand, one hundred forty-three".