120229009 has 2 divisors, whose sum is σ = 120229010. Its totient is φ = 120229008.

The previous prime is 120229001. The next prime is 120229019. The reversal of 120229009 is 900922021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 97950609 + 22278400 = 9897^2 + 4720^2 .

It is a cyclic number.

It is not a de Polignac number, because 120229009 - 2³ = 120229001 is a prime.

It is not a weakly prime, because it can be changed into another prime (120229001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60114504 + 60114505.

It is an arithmetic number, because the mean of its divisors is an integer number (60114505).

Almost surely, 2^120229009 is an apocalyptic number.

It is an amenable number.

120229009 is a deficient number, since it is larger than the sum of its proper divisors (1).

120229009 is an equidigital number, since it uses as much as digits as its factorization.

120229009 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 25.

The square root of 120229009 is about 10964.8989507428. The cubic root of 120229009 is about 493.5559847891. Note that the first 3 decimals are identical.

The spelling of 120229009 in words is "one hundred twenty million, two hundred twenty-nine thousand, nine".