120111102109 has 2 divisors, whose sum is σ = 120111102110. Its totient is φ = 120111102108.

The previous prime is 120111102053. The next prime is 120111102143. The reversal of 120111102109 is 901201111021.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 66124579609 + 53986522500 = 257147^2 + 232350^2 .

It is a cyclic number.

It is not a de Polignac number, because 120111102109 - 2¹⁷ = 120110971037 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (120111102149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60055551054 + 60055551055.

It is an arithmetic number, because the mean of its divisors is an integer number (60055551055).

Almost surely, 2^120111102109 is an apocalyptic number.

It is an amenable number.

120111102109 is a deficient number, since it is larger than the sum of its proper divisors (1).

120111102109 is an equidigital number, since it uses as much as digits as its factorization.

120111102109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36, while the sum is 19.

The spelling of 120111102109 in words is "one hundred twenty billion, one hundred eleven million, one hundred two thousand, one hundred nine".