221220414143 has 2 divisors, whose sum is σ = 221220414144. Its totient is φ = 221220414142.

The previous prime is 221220414119. The next prime is 221220414199. The reversal of 221220414143 is 341414022122.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 221220414143 - 2²² = 221216219839 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (221220414043) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110610207071 + 110610207072.

It is an arithmetic number, because the mean of its divisors is an integer number (110610207072).

Almost surely, 2^221220414143 is an apocalyptic number.

221220414143 is a deficient number, since it is larger than the sum of its proper divisors (1).

221220414143 is an equidigital number, since it uses as much as digits as its factorization.

221220414143 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3072, while the sum is 26.

Adding to 221220414143 its reverse (341414022122), we get a palindrome (562634436265).

The spelling of 221220414143 in words is "two hundred twenty-one billion, two hundred twenty million, four hundred fourteen thousand, one hundred forty-three".