102102122197 has 2 divisors, whose sum is σ = 102102122198. Its totient is φ = 102102122196.

The previous prime is 102102122191. The next prime is 102102122207. The reversal of 102102122197 is 791221201201.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 77394683601 + 24707438596 = 278199^2 + 157186^2 .

It is a cyclic number.

It is not a de Polignac number, because 102102122197 - 2²⁷ = 101967904469 is a prime.

It is a super-2 number, since 2×102102122197² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (102102122191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51051061098 + 51051061099.

It is an arithmetic number, because the mean of its divisors is an integer number (51051061099).

Almost surely, 2^102102122197 is an apocalyptic number.

It is an amenable number.

102102122197 is a deficient number, since it is larger than the sum of its proper divisors (1).

102102122197 is an equidigital number, since it uses as much as digits as its factorization.

102102122197 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1008, while the sum is 28.

Adding to 102102122197 its reverse (791221201201), we get a palindrome (893323323398).

The spelling of 102102122197 in words is "one hundred two billion, one hundred two million, one hundred twenty-two thousand, one hundred ninety-seven".