1202100002171 has 2 divisors, whose sum is σ = 1202100002172. Its totient is φ = 1202100002170.

The previous prime is 1202100002167. The next prime is 1202100002239. The reversal of 1202100002171 is 1712000012021.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1202100002171 - 2² = 1202100002167 is a prime.

It is not a weakly prime, because it can be changed into another prime (1202100002771) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 601050001085 + 601050001086.

It is an arithmetic number, because the mean of its divisors is an integer number (601050001086).

Almost surely, 2^{1202100002171} is an apocalyptic number.

1202100002171 is a deficient number, since it is larger than the sum of its proper divisors (1).

1202100002171 is an equidigital number, since it uses as much as digits as its factorization.

1202100002171 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 56, while the sum is 17.

Adding to 1202100002171 its reverse (1712000012021), we get a palindrome (2914100014192).

The spelling of 1202100002171 in words is "one trillion, two hundred two billion, one hundred million, two thousand, one hundred seventy-one".