20201100001097 has 2 divisors, whose sum is σ = 20201100001098. Its totient is φ = 20201100001096.

The previous prime is 20201100001079. The next prime is 20201100001111. The reversal of 20201100001097 is 79010000110202.

Together with previous prime (20201100001079) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15443100112441 + 4757999888656 = 3929771^2 + 2181284^2 .

It is a cyclic number.

It is not a de Polignac number, because 20201100001097 - 2¹⁶ = 20201099935561 is a prime.

It is not a weakly prime, because it can be changed into another prime (20201100001057) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10100550000548 + 10100550000549.

It is an arithmetic number, because the mean of its divisors is an integer number (10100550000549).

Almost surely, 2^{20201100001097} is an apocalyptic number.

It is an amenable number.

20201100001097 is a deficient number, since it is larger than the sum of its proper divisors (1).

20201100001097 is an equidigital number, since it uses as much as digits as its factorization.

20201100001097 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 252, while the sum is 23.

Adding to 20201100001097 its reverse (79010000110202), we get a palindrome (99211100111299).

The spelling of 20201100001097 in words is "twenty trillion, two hundred one billion, one hundred million, one thousand, ninety-seven".