221916930359 has 2 divisors, whose sum is σ = 221916930360. Its totient is φ = 221916930358.

The previous prime is 221916930349. The next prime is 221916930517. The reversal of 221916930359 is 953039619122.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 221916930359 - 2¹⁶ = 221916864823 is a prime.

It is a super-2 number, since 2×221916930359² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (221916930349) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110958465179 + 110958465180.

It is an arithmetic number, because the mean of its divisors is an integer number (110958465180).

Almost surely, 2^221916930359 is an apocalyptic number.

221916930359 is a deficient number, since it is larger than the sum of its proper divisors (1).

221916930359 is an equidigital number, since it uses as much as digits as its factorization.

221916930359 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 787320, while the sum is 50.

The spelling of 221916930359 in words is "two hundred twenty-one billion, nine hundred sixteen million, nine hundred thirty thousand, three hundred fifty-nine".