21379216075219 has 2 divisors, whose sum is σ = 21379216075220. Its totient is φ = 21379216075218.

The previous prime is 21379216075211. The next prime is 21379216075247. The reversal of 21379216075219 is 91257061297312.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21379216075219 - 2³ = 21379216075211 is a prime.

It is a super-2 number, since 2×21379216075219² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 21379216075219.

It is not a weakly prime, because it can be changed into another prime (21379216075211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10689608037609 + 10689608037610.

It is an arithmetic number, because the mean of its divisors is an integer number (10689608037610).

Almost surely, 2^{21379216075219} is an apocalyptic number.

21379216075219 is a deficient number, since it is larger than the sum of its proper divisors (1).

21379216075219 is an equidigital number, since it uses as much as digits as its factorization.

21379216075219 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2857680, while the sum is 55.

The spelling of 21379216075219 in words is "twenty-one trillion, three hundred seventy-nine billion, two hundred sixteen million, seventy-five thousand, two hundred nineteen".