102102211101197 has 2 divisors, whose sum is σ = 102102211101198. Its totient is φ = 102102211101196.

The previous prime is 102102211101193. The next prime is 102102211101203. The reversal of 102102211101197 is 791101112201201.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 64526855845321 + 37575355255876 = 8032861^2 + 6129874^2 .

It is a cyclic number.

It is not a de Polignac number, because 102102211101197 - 2² = 102102211101193 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (102102211101193) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51051105550598 + 51051105550599.

It is an arithmetic number, because the mean of its divisors is an integer number (51051105550599).

Almost surely, 2^{102102211101197} is an apocalyptic number.

It is an amenable number.

102102211101197 is a deficient number, since it is larger than the sum of its proper divisors (1).

102102211101197 is an equidigital number, since it uses as much as digits as its factorization.

102102211101197 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 29.

Adding to 102102211101197 its reverse (791101112201201), we get a palindrome (893203323302398).

The spelling of 102102211101197 in words is "one hundred two trillion, one hundred two billion, two hundred eleven million, one hundred one thousand, one hundred ninety-seven".