120030123209 has 2 divisors, whose sum is σ = 120030123210. Its totient is φ = 120030123208.

The previous prime is 120030123203. The next prime is 120030123263. The reversal of 120030123209 is 902321030021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 74747560000 + 45282563209 = 273400^2 + 212797^2 .

It is a cyclic number.

It is not a de Polignac number, because 120030123209 - 2²⁴ = 120013345993 is a prime.

It is not a weakly prime, because it can be changed into another prime (120030123203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60015061604 + 60015061605.

It is an arithmetic number, because the mean of its divisors is an integer number (60015061605).

Almost surely, 2^120030123209 is an apocalyptic number.

It is an amenable number.

120030123209 is a deficient number, since it is larger than the sum of its proper divisors (1).

120030123209 is an equidigital number, since it uses as much as digits as its factorization.

120030123209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 648, while the sum is 23.

The spelling of 120030123209 in words is "one hundred twenty billion, thirty million, one hundred twenty-three thousand, two hundred nine".