321010001011009 has 4 divisors (see below), whose sum is σ = 321010054367940. Its totient is φ = 321009947654080.

The previous prime is 321010001010991. The next prime is 321010001011061. The reversal of 321010001011009 is 900110100010123.

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 305524949649984 + 15485051361025 = 17479272^2 + 3935105^2 .

It is a cyclic number.

It is not a de Polignac number, because 321010001011009 - 2²³ = 321009992622401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (321010001012009) 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, 16311124 + ... + 30134245.

It is an arithmetic number, because the mean of its divisors is an integer number (80252513591985).

Almost surely, 2^{321010001011009} is an apocalyptic number.

It is an amenable number.

321010001011009 is a deficient number, since it is larger than the sum of its proper divisors (53356931).

321010001011009 is an equidigital number, since it uses as much as digits as its factorization.

321010001011009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53356930.

The product of its (nonzero) digits is 54, while the sum is 19.

The spelling of 321010001011009 in words is "three hundred twenty-one trillion, ten billion, one million, eleven thousand, nine".