20218280322241 has 2 divisors, whose sum is σ = 20218280322242. Its totient is φ = 20218280322240.

The previous prime is 20218280322239. The next prime is 20218280322269. The reversal of 20218280322241 is 14222308281202.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11649224305216 + 8569056017025 = 3413096^2 + 2927295^2 .

It is a cyclic number.

It is not a de Polignac number, because 20218280322241 - 2¹ = 20218280322239 is a prime.

Together with 20218280322239, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 20218280322241.

It is not a weakly prime, because it can be changed into another prime (20218280325241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10109140161120 + 10109140161121.

It is an arithmetic number, because the mean of its divisors is an integer number (10109140161121).

Almost surely, 2^{20218280322241} is an apocalyptic number.

It is an amenable number.

20218280322241 is a deficient number, since it is larger than the sum of its proper divisors (1).

20218280322241 is an equidigital number, since it uses as much as digits as its factorization.

20218280322241 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 49152, while the sum is 37.

The spelling of 20218280322241 in words is "twenty trillion, two hundred eighteen billion, two hundred eighty million, three hundred twenty-two thousand, two hundred forty-one".