20411021522201 has 2 divisors, whose sum is σ = 20411021522202. Its totient is φ = 20411021522200.

The previous prime is 20411021522167. The next prime is 20411021522209. The reversal of 20411021522201 is 10222512011402.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10963389832201 + 9447631690000 = 3311101^2 + 3073700^2 .

It is a cyclic number.

It is not a de Polignac number, because 20411021522201 - 2³⁰ = 20409947780377 is a prime.

It is not a weakly prime, because it can be changed into another prime (20411021522209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10205510761100 + 10205510761101.

It is an arithmetic number, because the mean of its divisors is an integer number (10205510761101).

Almost surely, 2^{20411021522201} is an apocalyptic number.

It is an amenable number.

20411021522201 is a deficient number, since it is larger than the sum of its proper divisors (1).

20411021522201 is an equidigital number, since it uses as much as digits as its factorization.

20411021522201 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 640, while the sum is 23.

Adding to 20411021522201 its reverse (10222512011402), we get a palindrome (30633533533603).

The spelling of 20411021522201 in words is "twenty trillion, four hundred eleven billion, twenty-one million, five hundred twenty-two thousand, two hundred one".