221021010143 has 2 divisors, whose sum is σ = 221021010144. Its totient is φ = 221021010142.

The previous prime is 221021010103. The next prime is 221021010163. The reversal of 221021010143 is 341010120122.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 221021010143 - 2¹² = 221021006047 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (221021010103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110510505071 + 110510505072.

It is an arithmetic number, because the mean of its divisors is an integer number (110510505072).

Almost surely, 2^221021010143 is an apocalyptic number.

221021010143 is a deficient number, since it is larger than the sum of its proper divisors (1).

221021010143 is an equidigital number, since it uses as much as digits as its factorization.

221021010143 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 221021010143 its reverse (341010120122), we get a palindrome (562031130265).

The spelling of 221021010143 in words is "two hundred twenty-one billion, twenty-one million, ten thousand, one hundred forty-three".