120210109 has 2 divisors, whose sum is σ = 120210110. Its totient is φ = 120210108.

The previous prime is 120210091. The next prime is 120210137. The reversal of 120210109 is 901012021.

Together with previous prime (120210091) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 65966884 + 54243225 = 8122^2 + 7365^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-120210109 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 120210092 and 120210101.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (120210149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60105054 + 60105055.

It is an arithmetic number, because the mean of its divisors is an integer number (60105055).

Almost surely, 2^120210109 is an apocalyptic number.

It is an amenable number.

120210109 is a deficient number, since it is larger than the sum of its proper divisors (1).

120210109 is an equidigital number, since it uses as much as digits as its factorization.

120210109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36, while the sum is 16.

The square root of 120210109 is about 10964.0370758220. The cubic root of 120210109 is about 493.5301211005.

It can be divided in two parts, 1202 and 10109, that added together give a palindrome (11311).

The spelling of 120210109 in words is "one hundred twenty million, two hundred ten thousand, one hundred nine".