221021322002141 has 2 divisors, whose sum is σ = 221021322002142. Its totient is φ = 221021322002140.

The previous prime is 221021322002119. The next prime is 221021322002149. The reversal of 221021322002141 is 141200223120122.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 201939844986916 + 19081477015225 = 14210554^2 + 4368235^2 .

It is a cyclic number.

It is not a de Polignac number, because 221021322002141 - 2⁶ = 221021322002077 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (221021322002149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110510661001070 + 110510661001071.

It is an arithmetic number, because the mean of its divisors is an integer number (110510661001071).

Almost surely, 2^{221021322002141} is an apocalyptic number.

It is an amenable number.

221021322002141 is a deficient number, since it is larger than the sum of its proper divisors (1).

221021322002141 is an equidigital number, since it uses as much as digits as its factorization.

221021322002141 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 768, while the sum is 23.

Adding to 221021322002141 its reverse (141200223120122), we get a palindrome (362221545122263).

The spelling of 221021322002141 in words is "two hundred twenty-one trillion, twenty-one billion, three hundred twenty-two million, two thousand, one hundred forty-one".