1022161112171 has 2 divisors, whose sum is σ = 1022161112172. Its totient is φ = 1022161112170.

The previous prime is 1022161112117. The next prime is 1022161112243. The reversal of 1022161112171 is 1712111612201.

Together with previous prime (1022161112117) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1022161112171 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1022161112171.

It is not a weakly prime, because it can be changed into another prime (1022161111171) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 511080556085 + 511080556086.

It is an arithmetic number, because the mean of its divisors is an integer number (511080556086).

Almost surely, 2^{1022161112171} is an apocalyptic number.

1022161112171 is a deficient number, since it is larger than the sum of its proper divisors (1).

1022161112171 is an equidigital number, since it uses as much as digits as its factorization.

1022161112171 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 336, while the sum is 26.

Adding to 1022161112171 its reverse (1712111612201), we get a palindrome (2734272724372).

The spelling of 1022161112171 in words is "one trillion, twenty-two billion, one hundred sixty-one million, one hundred twelve thousand, one hundred seventy-one".