21220344302219 has 2 divisors, whose sum is σ = 21220344302220. Its totient is φ = 21220344302218.

The previous prime is 21220344302197. The next prime is 21220344302233. The reversal of 21220344302219 is 91220344302212.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21220344302219 - 2¹⁶ = 21220344236683 is a prime.

It is a super-2 number, since 2×21220344302219² (a number of 27 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (21220344302239) 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, 10610172151109 + 10610172151110.

It is an arithmetic number, because the mean of its divisors is an integer number (10610172151110).

Almost surely, 2^{21220344302219} is an apocalyptic number.

21220344302219 is a deficient number, since it is larger than the sum of its proper divisors (1).

21220344302219 is an equidigital number, since it uses as much as digits as its factorization.

21220344302219 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 41472, while the sum is 35.

The spelling of 21220344302219 in words is "twenty-one trillion, two hundred twenty billion, three hundred forty-four million, three hundred two thousand, two hundred nineteen".