3001001021 has 4 divisors (see below), whose sum is σ = 3001401312. Its totient is φ = 3000600732.

The previous prime is 3001000979. The next prime is 3001001053. The reversal of 3001001021 is 1201001003.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 3001001021 - 2¹⁸ = 3000738877 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3001001321) 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 3 ways as a sum of consecutive naturals, for example, 188681 + ... + 203966.

It is an arithmetic number, because the mean of its divisors is an integer number (750350328).

Almost surely, 2^3001001021 is an apocalyptic number.

It is an amenable number.

3001001021 is a deficient number, since it is larger than the sum of its proper divisors (400291).

3001001021 is an equidigital number, since it uses as much as digits as its factorization.

3001001021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 400290.

The product of its (nonzero) digits is 6, while the sum is 8.

The square root of 3001001021 is about 54781.3930180677. The cubic root of 3001001021 is about 1442.4099660362.

Adding to 3001001021 its reverse (1201001003), we get a palindrome (4202002024).

The spelling of 3001001021 in words is "three billion, one million, one thousand, twenty-one".