101111321197 has 2 divisors, whose sum is σ = 101111321198. Its totient is φ = 101111321196.

The previous prime is 101111321191. The next prime is 101111321237. The reversal of 101111321197 is 791123111101.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 84129582601 + 16981738596 = 290051^2 + 130314^2 .

It is a cyclic number.

It is not a de Polignac number, because 101111321197 - 2²³ = 101102932589 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (101111321191) 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, 50555660598 + 50555660599.

It is an arithmetic number, because the mean of its divisors is an integer number (50555660599).

Almost surely, 2^101111321197 is an apocalyptic number.

It is an amenable number.

101111321197 is a deficient number, since it is larger than the sum of its proper divisors (1).

101111321197 is an equidigital number, since it uses as much as digits as its factorization.

101111321197 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 378, while the sum is 28.

Adding to 101111321197 its reverse (791123111101), we get a palindrome (892234432298).

The spelling of 101111321197 in words is "one hundred one billion, one hundred eleven million, three hundred twenty-one thousand, one hundred ninety-seven".