1202111122171 has 2 divisors, whose sum is σ = 1202111122172. Its totient is φ = 1202111122170.

The previous prime is 1202111122117. The next prime is 1202111122183. The reversal of 1202111122171 is 1712211112021.

Together with previous prime (1202111122117) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1202111122171 is a prime.

It is not a weakly prime, because it can be changed into another prime (1202111122271) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 601055561085 + 601055561086.

It is an arithmetic number, because the mean of its divisors is an integer number (601055561086).

Almost surely, 2^{1202111122171} is an apocalyptic number.

1202111122171 is a deficient number, since it is larger than the sum of its proper divisors (1).

1202111122171 is an equidigital number, since it uses as much as digits as its factorization.

1202111122171 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 112, while the sum is 22.

Adding to 1202111122171 its reverse (1712211112021), we get a palindrome (2914322234192).

The spelling of 1202111122171 in words is "one trillion, two hundred two billion, one hundred eleven million, one hundred twenty-two thousand, one hundred seventy-one".