221021102198063 has 2 divisors, whose sum is σ = 221021102198064. Its totient is φ = 221021102198062.

The previous prime is 221021102198047. The next prime is 221021102198137. The reversal of 221021102198063 is 360891201120122.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 221021102198063 - 2⁴ = 221021102198047 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (221021102198003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110510551099031 + 110510551099032.

It is an arithmetic number, because the mean of its divisors is an integer number (110510551099032).

Almost surely, 2^{221021102198063} is an apocalyptic number.

221021102198063 is a deficient number, since it is larger than the sum of its proper divisors (1).

221021102198063 is an equidigital number, since it uses as much as digits as its factorization.

221021102198063 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20736, while the sum is 38.

The spelling of 221021102198063 in words is "two hundred twenty-one trillion, twenty-one billion, one hundred two million, one hundred ninety-eight thousand, sixty-three".