2120238009 has 12 divisors (see below), whose sum is σ = 3127727616. Its totient is φ = 1383417432.

The previous prime is 2120237929. The next prime is 2120238017. The reversal of 2120238009 is 9008320212.

It is a happy number.

2120238009 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2120238009 - 2¹⁶ = 2120172473 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2120238019) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2505769 + ... + 2506614.

It is an arithmetic number, because the mean of its divisors is an integer number (260643968).

Almost surely, 2^2120238009 is an apocalyptic number.

It is an amenable number.

2120238009 is a deficient number, since it is larger than the sum of its proper divisors (1007489607).

2120238009 is a wasteful number, since it uses less digits than its factorization.

2120238009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5012436 (or 5012433 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 2120238009 is about 46046.0422729250. The cubic root of 2120238009 is about 1284.6797304255.

The spelling of 2120238009 in words is "two billion, one hundred twenty million, two hundred thirty-eight thousand, nine".