1006220336521 has 4 divisors (see below), whose sum is σ = 1006234922052. Its totient is φ = 1006205750992.

The previous prime is 1006220336497. The next prime is 1006220336567. The reversal of 1006220336521 is 1256330226001.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 792278010000 + 213942326521 = 890100^2 + 462539^2 .

It is a cyclic number.

It is not a de Polignac number, because 1006220336521 - 2¹¹ = 1006220334473 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1006220336591) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7188790 + ... + 7327423.

It is an arithmetic number, because the mean of its divisors is an integer number (251558730513).

Almost surely, 2^{1006220336521} is an apocalyptic number.

It is an amenable number.

1006220336521 is a deficient number, since it is larger than the sum of its proper divisors (14585531).

1006220336521 is an equidigital number, since it uses as much as digits as its factorization.

1006220336521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14585530.

The product of its (nonzero) digits is 12960, while the sum is 31.

The spelling of 1006220336521 in words is "one trillion, six billion, two hundred twenty million, three hundred thirty-six thousand, five hundred twenty-one".