1020121102171 has 2 divisors, whose sum is σ = 1020121102172. Its totient is φ = 1020121102170.

The previous prime is 1020121102153. The next prime is 1020121102181. The reversal of 1020121102171 is 1712011210201.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1020121102171 - 2⁵ = 1020121102139 is a prime.

It is not a weakly prime, because it can be changed into another prime (1020121102181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 510060551085 + 510060551086.

It is an arithmetic number, because the mean of its divisors is an integer number (510060551086).

Almost surely, 2^{1020121102171} is an apocalyptic number.

1020121102171 is a deficient number, since it is larger than the sum of its proper divisors (1).

1020121102171 is an equidigital number, since it uses as much as digits as its factorization.

1020121102171 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 19.

Adding to 1020121102171 its reverse (1712011210201), we get a palindrome (2732132312372).

The spelling of 1020121102171 in words is "one trillion, twenty billion, one hundred twenty-one million, one hundred two thousand, one hundred seventy-one".