1021233009 has 8 divisors (see below), whose sum is σ = 1363846240. Its totient is φ = 679720896.

The previous prime is 1021233001. The next prime is 1021233029. The reversal of 1021233009 is 9003321201.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1021233009 - 2³ = 1021233001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1021233001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 273112 + ... + 276825.

It is an arithmetic number, because the mean of its divisors is an integer number (170480780).

Almost surely, 2^1021233009 is an apocalyptic number.

It is an amenable number.

1021233009 is a deficient number, since it is larger than the sum of its proper divisors (342613231).

1021233009 is an equidigital number, since it uses as much as digits as its factorization.

1021233009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 550559.

The product of its (nonzero) digits is 324, while the sum is 21.

The square root of 1021233009 is about 31956.7365198639. The cubic root of 1021233009 is about 1007.0281589300.

The spelling of 1021233009 in words is "one billion, twenty-one million, two hundred thirty-three thousand, nine".