202011011222171 has 2 divisors, whose sum is σ = 202011011222172. Its totient is φ = 202011011222170.

The previous prime is 202011011221993. The next prime is 202011011222341. The reversal of 202011011222171 is 171222110110202.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-202011011222171 is a prime.

It is not a weakly prime, because it can be changed into another prime (202011011224171) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101005505611085 + 101005505611086.

It is an arithmetic number, because the mean of its divisors is an integer number (101005505611086).

Almost surely, 2^{202011011222171} is an apocalyptic number.

202011011222171 is a deficient number, since it is larger than the sum of its proper divisors (1).

202011011222171 is an equidigital number, since it uses as much as digits as its factorization.

202011011222171 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 224, while the sum is 23.

Adding to 202011011222171 its reverse (171222110110202), we get a palindrome (373233121332373).

The spelling of 202011011222171 in words is "two hundred two trillion, eleven billion, eleven million, two hundred twenty-two thousand, one hundred seventy-one".