120211111117 has 2 divisors, whose sum is σ = 120211111118. Its totient is φ = 120211111116.

The previous prime is 120211111109. The next prime is 120211111129. The reversal of 120211111117 is 711111112021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 62217320356 + 57993790761 = 249434^2 + 240819^2 .

It is a cyclic number.

It is not a de Polignac number, because 120211111117 - 2³ = 120211111109 is a prime.

It is a super-2 number, since 2×120211111117² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 120211111094 and 120211111103.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (120211111157) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60105555558 + 60105555559.

It is an arithmetic number, because the mean of its divisors is an integer number (60105555559).

Almost surely, 2^120211111117 is an apocalyptic number.

It is an amenable number.

120211111117 is a deficient number, since it is larger than the sum of its proper divisors (1).

120211111117 is an equidigital number, since it uses as much as digits as its factorization.

120211111117 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 28, while the sum is 19.

Adding to 120211111117 its reverse (711111112021), we get a palindrome (831322223138).

The spelling of 120211111117 in words is "one hundred twenty billion, two hundred eleven million, one hundred eleven thousand, one hundred seventeen".