102111210999173 has 2 divisors, whose sum is σ = 102111210999174. Its totient is φ = 102111210999172.

The previous prime is 102111210999157. The next prime is 102111210999197. The reversal of 102111210999173 is 371999012111201.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 90195611196769 + 11915599802404 = 9497137^2 + 3451898^2 .

It is a cyclic number.

It is not a de Polignac number, because 102111210999173 - 2⁴ = 102111210999157 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (102111210999103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51055605499586 + 51055605499587.

It is an arithmetic number, because the mean of its divisors is an integer number (51055605499587).

Almost surely, 2^{102111210999173} is an apocalyptic number.

It is an amenable number.

102111210999173 is a deficient number, since it is larger than the sum of its proper divisors (1).

102111210999173 is an equidigital number, since it uses as much as digits as its factorization.

102111210999173 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 61236, while the sum is 47.

The spelling of 102111210999173 in words is "one hundred two trillion, one hundred eleven billion, two hundred ten million, nine hundred ninety-nine thousand, one hundred seventy-three".