1002012001 has 8 divisors (see below), whose sum is σ = 1017658080. Its totient is φ = 986386368.

The previous prime is 1002011953. The next prime is 1002012007. The reversal of 1002012001 is 1002102001.

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 1002012001 - 2⁹ = 1002011489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1002012007) 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 7 ways as a sum of consecutive naturals, for example, 115545 + ... + 123913.

It is an arithmetic number, because the mean of its divisors is an integer number (127207260).

Almost surely, 2^1002012001 is an apocalyptic number.

It is an amenable number.

1002012001 is a deficient number, since it is larger than the sum of its proper divisors (15646079).

1002012001 is an equidigital number, since it uses as much as digits as its factorization.

1002012001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10223.

The product of its (nonzero) digits is 4, while the sum is 7.

The square root of 1002012001 is about 31654.5731451239. The cubic root of 1002012001 is about 1000.6702177079.

Adding to 1002012001 its reverse (1002102001), we get a palindrome (2004114002).

Subtracting 1002012001 from its reverse (1002102001), we obtain a square (90000 = 300²).

The spelling of 1002012001 in words is "one billion, two million, twelve thousand, one".