221021120968343 has 2 divisors, whose sum is σ = 221021120968344. Its totient is φ = 221021120968342.

The previous prime is 221021120968337. The next prime is 221021120968379. The reversal of 221021120968343 is 343869021120122.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 221021120968343 - 2²⁴ = 221021104191127 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 221021120968294 and 221021120968303.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (221021120968303) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110510560484171 + 110510560484172.

It is an arithmetic number, because the mean of its divisors is an integer number (110510560484172).

Almost surely, 2^{221021120968343} is an apocalyptic number.

221021120968343 is a deficient number, since it is larger than the sum of its proper divisors (1).

221021120968343 is an equidigital number, since it uses as much as digits as its factorization.

221021120968343 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 248832, while the sum is 44.

The spelling of 221021120968343 in words is "two hundred twenty-one trillion, twenty-one billion, one hundred twenty million, nine hundred sixty-eight thousand, three hundred forty-three".