20102002212197 has 2 divisors, whose sum is σ = 20102002212198. Its totient is φ = 20102002212196.

The previous prime is 20102002212157. The next prime is 20102002212251. The reversal of 20102002212197 is 79121220020102.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11998921890916 + 8103080321281 = 3463946^2 + 2846591^2 .

It is a cyclic number.

It is not a de Polignac number, because 20102002212197 - 2³⁴ = 20084822343013 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20102002212157) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10051001106098 + 10051001106099.

It is an arithmetic number, because the mean of its divisors is an integer number (10051001106099).

Almost surely, 2^{20102002212197} is an apocalyptic number.

It is an amenable number.

20102002212197 is a deficient number, since it is larger than the sum of its proper divisors (1).

20102002212197 is an equidigital number, since it uses as much as digits as its factorization.

20102002212197 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2016, while the sum is 29.

Adding to 20102002212197 its reverse (79121220020102), we get a palindrome (99223222232299).

The spelling of 20102002212197 in words is "twenty trillion, one hundred two billion, two million, two hundred twelve thousand, one hundred ninety-seven".