102021111200171 has 2 divisors, whose sum is σ = 102021111200172. Its totient is φ = 102021111200170.

The previous prime is 102021111200159. The next prime is 102021111200201. The reversal of 102021111200171 is 171002111120201.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 102021111200171 - 2¹⁴ = 102021111183787 is a prime.

It is not a weakly prime, because it can be changed into another prime (102021111280171) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51010555600085 + 51010555600086.

It is an arithmetic number, because the mean of its divisors is an integer number (51010555600086).

Almost surely, 2^{102021111200171} is an apocalyptic number.

102021111200171 is a deficient number, since it is larger than the sum of its proper divisors (1).

102021111200171 is an equidigital number, since it uses as much as digits as its factorization.

102021111200171 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 56, while the sum is 20.

Adding to 102021111200171 its reverse (171002111120201), we get a palindrome (273023222320372).

The spelling of 102021111200171 in words is "one hundred two trillion, twenty-one billion, one hundred eleven million, two hundred thousand, one hundred seventy-one".