20201201197 has 2 divisors, whose sum is σ = 20201201198. Its totient is φ = 20201201196.

The previous prime is 20201201171. The next prime is 20201201203. The reversal of 20201201197 is 79110210202.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17208454761 + 2992746436 = 131181^2 + 54706^2 .

It is a cyclic number.

It is not a de Polignac number, because 20201201197 - 2²³ = 20192812589 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20201201107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10100600598 + 10100600599.

It is an arithmetic number, because the mean of its divisors is an integer number (10100600599).

Almost surely, 2^20201201197 is an apocalyptic number.

It is an amenable number.

20201201197 is a deficient number, since it is larger than the sum of its proper divisors (1).

20201201197 is an equidigital number, since it uses as much as digits as its factorization.

20201201197 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 504, while the sum is 25.

Adding to 20201201197 its reverse (79110210202), we get a palindrome (99311411399).

The spelling of 20201201197 in words is "twenty billion, two hundred one million, two hundred one thousand, one hundred ninety-seven".