120101100109 has 2 divisors, whose sum is σ = 120101100110. Its totient is φ = 120101100108.

The previous prime is 120101100059. The next prime is 120101100113. The reversal of 120101100109 is 901001101021.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 119891140009 + 209960100 = 346253^2 + 14490^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-120101100109 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 120101100092 and 120101100101.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (120101100139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60050550054 + 60050550055.

It is an arithmetic number, because the mean of its divisors is an integer number (60050550055).

Almost surely, 2^120101100109 is an apocalyptic number.

It is an amenable number.

120101100109 is a deficient number, since it is larger than the sum of its proper divisors (1).

120101100109 is an equidigital number, since it uses as much as digits as its factorization.

120101100109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18, while the sum is 16.

The spelling of 120101100109 in words is "one hundred twenty billion, one hundred one million, one hundred thousand, one hundred nine".