120120202009 has 2 divisors, whose sum is σ = 120120202010. Its totient is φ = 120120202008.

The previous prime is 120120202003. The next prime is 120120202061. The reversal of 120120202009 is 900202021021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 84548355984 + 35571846025 = 290772^2 + 188605^2 .

It is an emirp because it is prime and its reverse (900202021021) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 120120202009 - 2²⁷ = 119985984281 is a prime.

It is not a weakly prime, because it can be changed into another prime (120120202003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60060101004 + 60060101005.

It is an arithmetic number, because the mean of its divisors is an integer number (60060101005).

Almost surely, 2^120120202009 is an apocalyptic number.

It is an amenable number.

120120202009 is a deficient number, since it is larger than the sum of its proper divisors (1).

120120202009 is an equidigital number, since it uses as much as digits as its factorization.

120120202009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 19.

The spelling of 120120202009 in words is "one hundred twenty billion, one hundred twenty million, two hundred two thousand, nine".