1006321121 has 8 divisors (see below), whose sum is σ = 1084864704. Its totient is φ = 927939600.

The previous prime is 1006321091. The next prime is 1006321181. The reversal of 1006321121 is 1211236001.

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

It is a cyclic number.

It is not a de Polignac number, because 1006321121 - 2²² = 1002126817 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1006321121.

It is not an unprimeable number, because it can be changed into a prime (1006321181) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27455 + ... + 52596.

It is an arithmetic number, because the mean of its divisors is an integer number (135608088).

Almost surely, 2^1006321121 is an apocalyptic number.

It is an amenable number.

1006321121 is a deficient number, since it is larger than the sum of its proper divisors (78543583).

1006321121 is an equidigital number, since it uses as much as digits as its factorization.

1006321121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81031.

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

The square root of 1006321121 is about 31722.5648553203. The cubic root of 1006321121 is about 1002.1026162397.

Adding to 1006321121 its reverse (1211236001), we get a palindrome (2217557122).

The spelling of 1006321121 in words is "one billion, six million, three hundred twenty-one thousand, one hundred twenty-one".