20101101197 has 2 divisors, whose sum is σ = 20101101198. Its totient is φ = 20101101196.

The previous prime is 20101101191. The next prime is 20101101203. The reversal of 20101101197 is 79110110102.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (20101101191) and next prime (20101101203).

It can be written as a sum of positive squares in only one way, i.e., 17116227241 + 2984873956 = 130829^2 + 54634^2 .

It is a cyclic number.

It is not a de Polignac number, because 20101101197 - 2⁶ = 20101101133 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20101101191) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10050550598 + 10050550599.

It is an arithmetic number, because the mean of its divisors is an integer number (10050550599).

Almost surely, 2^20101101197 is an apocalyptic number.

It is an amenable number.

20101101197 is a deficient number, since it is larger than the sum of its proper divisors (1).

20101101197 is an equidigital number, since it uses as much as digits as its factorization.

20101101197 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 126, while the sum is 23.

Adding to 20101101197 its reverse (79110110102), we get a palindrome (99211211299).

The spelling of 20101101197 in words is "twenty billion, one hundred one million, one hundred one thousand, one hundred ninety-seven".