20011112202097 has 2 divisors, whose sum is σ = 20011112202098. Its totient is φ = 20011112202096.

The previous prime is 20011112202089. The next prime is 20011112202187. The reversal of 20011112202097 is 79020221111002.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18628192649521 + 1382919552576 = 4316039^2 + 1175976^2 .

It is a cyclic number.

It is not a de Polignac number, because 20011112202097 - 2³ = 20011112202089 is a prime.

It is a super-2 number, since 2×20011112202097² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (20011112202017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10005556101048 + 10005556101049.

It is an arithmetic number, because the mean of its divisors is an integer number (10005556101049).

Almost surely, 2^{20011112202097} is an apocalyptic number.

It is an amenable number.

20011112202097 is a deficient number, since it is larger than the sum of its proper divisors (1).

20011112202097 is an equidigital number, since it uses as much as digits as its factorization.

20011112202097 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1008, while the sum is 28.

Adding to 20011112202097 its reverse (79020221111002), we get a palindrome (99031333313099).

The spelling of 20011112202097 in words is "twenty trillion, eleven billion, one hundred twelve million, two hundred two thousand, ninety-seven".