20218280322239 has 2 divisors, whose sum is σ = 20218280322240. Its totient is φ = 20218280322238.

The previous prime is 20218280322193. The next prime is 20218280322241. The reversal of 20218280322239 is 93222308281202.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20218280322239 - 2²⁰ = 20218279273663 is a prime.

Together with 20218280322241, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20218280322239.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20218280322269) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10109140161119 + 10109140161120.

It is an arithmetic number, because the mean of its divisors is an integer number (10109140161120).

Almost surely, 2^{20218280322239} is an apocalyptic number.

20218280322239 is a deficient number, since it is larger than the sum of its proper divisors (1).

20218280322239 is an equidigital number, since it uses as much as digits as its factorization.

20218280322239 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 331776, while the sum is 44.

The spelling of 20218280322239 in words is "twenty trillion, two hundred eighteen billion, two hundred eighty million, three hundred twenty-two thousand, two hundred thirty-nine".