30021001 has 8 divisors (see below), whose sum is σ = 30538944. Its totient is φ = 29505840.

The previous prime is 30020999. The next prime is 30021011. The reversal of 30021001 is 10012003.

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 30021001 - 2¹ = 30020999 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30021011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38451 + ... + 39223.

It is an arithmetic number, because the mean of its divisors is an integer number (3817368).

Almost surely, 2^30021001 is an apocalyptic number.

It is an amenable number.

30021001 is a deficient number, since it is larger than the sum of its proper divisors (517943).

30021001 is an equidigital number, since it uses as much as digits as its factorization.

30021001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1391.

The product of its (nonzero) digits is 6, while the sum is 7.

The square root of 30021001 is about 5479.1423598954. The cubic root of 30021001 is about 310.7957392275.

Adding to 30021001 its reverse (10012003), we get a palindrome (40033004).

The spelling of 30021001 in words is "thirty million, twenty-one thousand, one".