102111000197 has 2 divisors, whose sum is σ = 102111000198. Its totient is φ = 102111000196.

The previous prime is 102111000179. The next prime is 102111000209. The reversal of 102111000197 is 791000111201.

It is a happy number.

Together with previous prime (102111000179) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 73696503841 + 28414496356 = 271471^2 + 168566^2 .

It is a cyclic number.

It is not a de Polignac number, because 102111000197 - 2⁶ = 102111000133 is a prime.

It is a super-2 number, since 2×102111000197² (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 (102111000697) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51055500098 + 51055500099.

It is an arithmetic number, because the mean of its divisors is an integer number (51055500099).

Almost surely, 2^102111000197 is an apocalyptic number.

It is an amenable number.

102111000197 is a deficient number, since it is larger than the sum of its proper divisors (1).

102111000197 is an equidigital number, since it uses as much as digits as its factorization.

102111000197 is an evil number, because the sum of its binary digits is even.

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

Adding to 102111000197 its reverse (791000111201), we get a palindrome (893111111398).

The spelling of 102111000197 in words is "one hundred two billion, one hundred eleven million, one hundred ninety-seven", and thus it is an aban number.