20445012323201 has 2 divisors, whose sum is σ = 20445012323202. Its totient is φ = 20445012323200.

The previous prime is 20445012323179. The next prime is 20445012323221. The reversal of 20445012323201 is 10232321054402.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18538182748801 + 1906829574400 = 4305599^2 + 1380880^2 .

It is a cyclic number.

It is not a de Polignac number, because 20445012323201 - 2³⁰ = 20443938581377 is a prime.

It is not a weakly prime, because it can be changed into another prime (20445012323221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10222506161600 + 10222506161601.

It is an arithmetic number, because the mean of its divisors is an integer number (10222506161601).

Almost surely, 2^{20445012323201} is an apocalyptic number.

It is an amenable number.

20445012323201 is a deficient number, since it is larger than the sum of its proper divisors (1).

20445012323201 is an equidigital number, since it uses as much as digits as its factorization.

20445012323201 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11520, while the sum is 29.

Adding to 20445012323201 its reverse (10232321054402), we get a palindrome (30677333377603).

The spelling of 20445012323201 in words is "twenty trillion, four hundred forty-five billion, twelve million, three hundred twenty-three thousand, two hundred one".