221424221143 has 2 divisors, whose sum is σ = 221424221144. Its totient is φ = 221424221142.

The previous prime is 221424221131. The next prime is 221424221147. The reversal of 221424221143 is 341122424122.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 221424221143 - 2²⁵ = 221390666711 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (221424221147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110712110571 + 110712110572.

It is an arithmetic number, because the mean of its divisors is an integer number (110712110572).

Almost surely, 2^221424221143 is an apocalyptic number.

221424221143 is a deficient number, since it is larger than the sum of its proper divisors (1).

221424221143 is an equidigital number, since it uses as much as digits as its factorization.

221424221143 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6144, while the sum is 28.

Adding to 221424221143 its reverse (341122424122), we get a palindrome (562546645265).

The spelling of 221424221143 in words is "two hundred twenty-one billion, four hundred twenty-four million, two hundred twenty-one thousand, one hundred forty-three".