2110120210109 has 2 divisors, whose sum is σ = 2110120210110. Its totient is φ = 2110120210108.

The previous prime is 2110120210091. The next prime is 2110120210129. The reversal of 2110120210109 is 9010120210112.

Together with previous prime (2110120210091) it forms an Ormiston pair, because they use the same digits, order apart.

It is an a-pointer prime, because the next prime (2110120210129) can be obtained adding 2110120210109 to its sum of digits (20).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1264731907609 + 845388302500 = 1124603^2 + 919450^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2110120210109 is a prime.

It is a super-2 number, since 2×2110120210109² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2110120210129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1055060105054 + 1055060105055.

It is an arithmetic number, because the mean of its divisors is an integer number (1055060105055).

Almost surely, 2^{2110120210109} is an apocalyptic number.

It is an amenable number.

2110120210109 is a deficient number, since it is larger than the sum of its proper divisors (1).

2110120210109 is an equidigital number, since it uses as much as digits as its factorization.

2110120210109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72, while the sum is 20.

The spelling of 2110120210109 in words is "two trillion, one hundred ten billion, one hundred twenty million, two hundred ten thousand, one hundred nine".