1002121222171 has 2 divisors, whose sum is σ = 1002121222172. Its totient is φ = 1002121222170.

The previous prime is 1002121222139. The next prime is 1002121222187. The reversal of 1002121222171 is 1712221212001.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1002121222171 - 2⁵ = 1002121222139 is a prime.

It is not a weakly prime, because it can be changed into another prime (1002121202171) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 501060611085 + 501060611086.

It is an arithmetic number, because the mean of its divisors is an integer number (501060611086).

Almost surely, 2^{1002121222171} is an apocalyptic number.

1002121222171 is a deficient number, since it is larger than the sum of its proper divisors (1).

1002121222171 is an equidigital number, since it uses as much as digits as its factorization.

1002121222171 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 224, while the sum is 22.

Adding to 1002121222171 its reverse (1712221212001), we get a palindrome (2714342434172).

The spelling of 1002121222171 in words is "one trillion, two billion, one hundred twenty-one million, two hundred twenty-two thousand, one hundred seventy-one".