111011021120171 has 2 divisors, whose sum is σ = 111011021120172. Its totient is φ = 111011021120170.

The previous prime is 111011021120159. The next prime is 111011021120231. The reversal of 111011021120171 is 171021120110111.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 111011021120171 - 2²² = 111011016925867 is a prime.

It is not a weakly prime, because it can be changed into another prime (111011021120971) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55505510560085 + 55505510560086.

It is an arithmetic number, because the mean of its divisors is an integer number (55505510560086).

Almost surely, 2^{111011021120171} is an apocalyptic number.

111011021120171 is a deficient number, since it is larger than the sum of its proper divisors (1).

111011021120171 is an equidigital number, since it uses as much as digits as its factorization.

111011021120171 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 28, while the sum is 20.

Adding to 111011021120171 its reverse (171021120110111), we get a palindrome (282032141230282).

The spelling of 111011021120171 in words is "one hundred eleven trillion, eleven billion, twenty-one million, one hundred twenty thousand, one hundred seventy-one".