110120102009 has 2 divisors, whose sum is σ = 110120102010. Its totient is φ = 110120102008.

The previous prime is 110120101997. The next prime is 110120102039. The reversal of 110120102009 is 900201021011.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 100951081984 + 9169020025 = 317728^2 + 95755^2 .

It is a cyclic number.

It is not a de Polignac number, because 110120102009 - 2²⁸ = 109851666553 is a prime.

It is not a weakly prime, because it can be changed into another prime (110120102039) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55060051004 + 55060051005.

It is an arithmetic number, because the mean of its divisors is an integer number (55060051005).

Almost surely, 2^110120102009 is an apocalyptic number.

It is an amenable number.

110120102009 is a deficient number, since it is larger than the sum of its proper divisors (1).

110120102009 is an equidigital number, since it uses as much as digits as its factorization.

110120102009 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 17.

The spelling of 110120102009 in words is "one hundred ten billion, one hundred twenty million, one hundred two thousand, nine".