1001012001 has 8 divisors (see below), whose sum is σ = 1456017504. Its totient is φ = 606673920.

The previous prime is 1001011987. The next prime is 1001012087. The reversal of 1001012001 is 1002101001.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1001012001 - 2⁹ = 1001011489 is a prime.

It is a super-2 number, since 2×1001012001² = 2004050052292048002, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1001012101) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15166816 + ... + 15166881.

It is an arithmetic number, because the mean of its divisors is an integer number (182002188).

Almost surely, 2^1001012001 is an apocalyptic number.

1001012001 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1001012001 is a deficient number, since it is larger than the sum of its proper divisors (455005503).

1001012001 is a wasteful number, since it uses less digits than its factorization.

1001012001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30333711.

The product of its (nonzero) digits is 2, while the sum is 6.

The square root of 1001012001 is about 31638.7736962102. The cubic root of 1001012001 is about 1000.3372199366.

Adding to 1001012001 its reverse (1002101001), we get a palindrome (2003113002).

It can be divided in two parts, 100 and 1012001, that added together give a palindrome (1012101).

The spelling of 1001012001 in words is "one billion, one million, twelve thousand, one".