120111203917 has 2 divisors, whose sum is σ = 120111203918. Its totient is φ = 120111203916.

The previous prime is 120111203899. The next prime is 120111203939. The reversal of 120111203917 is 719302111021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 75830839876 + 44280364041 = 275374^2 + 210429^2 .

It is a cyclic number.

It is not a de Polignac number, because 120111203917 - 2⁷ = 120111203789 is a prime.

It is a super-2 number, since 2×120111203917² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (120111207917) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60055601958 + 60055601959.

It is an arithmetic number, because the mean of its divisors is an integer number (60055601959).

Almost surely, 2^120111203917 is an apocalyptic number.

It is an amenable number.

120111203917 is a deficient number, since it is larger than the sum of its proper divisors (1).

120111203917 is an equidigital number, since it uses as much as digits as its factorization.

120111203917 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 756, while the sum is 28.

Adding to 120111203917 its reverse (719302111021), we get a palindrome (839413314938).

The spelling of 120111203917 in words is "one hundred twenty billion, one hundred eleven million, two hundred three thousand, nine hundred seventeen".