1120202009 has 16 divisors (see below), whose sum is σ = 1156202640. Its totient is φ = 1084953600.

The previous prime is 1120201997. The next prime is 1120202021. The reversal of 1120202009 is 9002020211.

It is an interprime number because it is at equal distance from previous prime (1120201997) and next prime (1120202021).

It can be written as a sum of positive squares in 8 ways, for example, as 1968409 + 1118233600 = 1403^2 + 33440^2 .

It is a cyclic number.

It is not a de Polignac number, because 1120202009 - 2²⁰ = 1119153433 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1120202059) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1009547 + ... + 1010655.

It is an arithmetic number, because the mean of its divisors is an integer number (72262665).

Almost surely, 2^1120202009 is an apocalyptic number.

It is an amenable number.

1120202009 is a deficient number, since it is larger than the sum of its proper divisors (36000631).

1120202009 is a wasteful number, since it uses less digits than its factorization.

1120202009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1420.

The product of its (nonzero) digits is 72, while the sum is 17.

The square root of 1120202009 is about 33469.4190119876. The cubic root of 1120202009 is about 1038.5612529585.

The spelling of 1120202009 in words is "one billion, one hundred twenty million, two hundred two thousand, nine".