20201220227101 has 2 divisors, whose sum is σ = 20201220227102. Its totient is φ = 20201220227100.

The previous prime is 20201220227051. The next prime is 20201220227107. The reversal of 20201220227101 is 10172202210202.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13014049035001 + 7187171192100 = 3607499^2 + 2680890^2 .

It is a cyclic number.

It is not a de Polignac number, because 20201220227101 - 2²⁵ = 20201186672669 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20201220227107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10100610113550 + 10100610113551.

It is an arithmetic number, because the mean of its divisors is an integer number (10100610113551).

Almost surely, 2^{20201220227101} is an apocalyptic number.

It is an amenable number.

20201220227101 is a deficient number, since it is larger than the sum of its proper divisors (1).

20201220227101 is an equidigital number, since it uses as much as digits as its factorization.

20201220227101 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 448, while the sum is 22.

Adding to 20201220227101 its reverse (10172202210202), we get a palindrome (30373422437303).

The spelling of 20201220227101 in words is "twenty trillion, two hundred one billion, two hundred twenty million, two hundred twenty-seven thousand, one hundred one".