221221100120063 has 2 divisors, whose sum is σ = 221221100120064. Its totient is φ = 221221100120062.

The previous prime is 221221100119933. The next prime is 221221100120071. The reversal of 221221100120063 is 360021001122122.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 221221100120063 - 2⁴⁶ = 150852355942399 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (221221100120863) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110610550060031 + 110610550060032.

It is an arithmetic number, because the mean of its divisors is an integer number (110610550060032).

Almost surely, 2^{221221100120063} is an apocalyptic number.

221221100120063 is a deficient number, since it is larger than the sum of its proper divisors (1).

221221100120063 is an equidigital number, since it uses as much as digits as its factorization.

221221100120063 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 576, while the sum is 23.

Adding to 221221100120063 its reverse (360021001122122), we get a palindrome (581242101242185).

The spelling of 221221100120063 in words is "two hundred twenty-one trillion, two hundred twenty-one billion, one hundred million, one hundred twenty thousand, sixty-three".