101211110197 has 2 divisors, whose sum is σ = 101211110198. Its totient is φ = 101211110196.

The previous prime is 101211110191. The next prime is 101211110227. The reversal of 101211110197 is 791011112101.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 99380040516 + 1831069681 = 315246^2 + 42791^2 .

It is a cyclic number.

It is not a de Polignac number, because 101211110197 - 2⁷ = 101211110069 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (101211110191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50605555098 + 50605555099.

It is an arithmetic number, because the mean of its divisors is an integer number (50605555099).

Almost surely, 2^101211110197 is an apocalyptic number.

It is an amenable number.

101211110197 is a deficient number, since it is larger than the sum of its proper divisors (1).

101211110197 is an equidigital number, since it uses as much as digits as its factorization.

101211110197 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 25.

Adding to 101211110197 its reverse (791011112101), we get a palindrome (892222222298).

The spelling of 101211110197 in words is "one hundred one billion, two hundred eleven million, one hundred ten thousand, one hundred ninety-seven".