10002001021001 has 8 divisors (see below), whose sum is σ = 11165024396064. Its totient is φ = 8881269405120.

The previous prime is 10002001020959. The next prime is 10002001021009. The reversal of 10002001021001 is 10012010020001.

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 10002001021001 - 2²² = 10001996826697 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 10002001021001.

It is not an unprimeable number, because it can be changed into a prime (10002001021009) 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, 10572939296 + ... + 10572940241.

It is an arithmetic number, because the mean of its divisors is an integer number (1395628049508).

Almost surely, 2^{10002001021001} is an apocalyptic number.

10002001021001 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

10002001021001 is a deficient number, since it is larger than the sum of its proper divisors (1163023375063).

10002001021001 is a wasteful number, since it uses less digits than its factorization.

10002001021001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21145879591.

The product of its (nonzero) digits is 4, while the sum is 8.

Adding to 10002001021001 its reverse (10012010020001), we get a palindrome (20014011041002).

The spelling of 10002001021001 in words is "ten trillion, two billion, one million, twenty-one thousand, one".