30211111111171 has 2 divisors, whose sum is σ = 30211111111172. Its totient is φ = 30211111111170.

The previous prime is 30211111111169. The next prime is 30211111111189. The reversal of 30211111111171 is 17111111111203.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 30211111111171 - 2¹ = 30211111111169 is a prime.

It is a super-2 number, since 2×30211111111171² (a number of 28 digits) contains 22 as substring.

Together with 30211111111169, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (30211111111471) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15105555555585 + 15105555555586.

It is an arithmetic number, because the mean of its divisors is an integer number (15105555555586).

Almost surely, 2^{30211111111171} is an apocalyptic number.

30211111111171 is a deficient number, since it is larger than the sum of its proper divisors (1).

30211111111171 is an equidigital number, since it uses as much as digits as its factorization.

30211111111171 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 42, while the sum is 22.

Adding to 30211111111171 its reverse (17111111111203), we get a palindrome (47322222222374).

The spelling of 30211111111171 in words is "thirty trillion, two hundred eleven billion, one hundred eleven million, one hundred eleven thousand, one hundred seventy-one".