10002001000121 has 8 divisors (see below), whose sum is σ = 10771464649344. Its totient is φ = 9232548630480.

The previous prime is 10002001000109. The next prime is 10002001000141. The reversal of 10002001000121 is 12100010020001.

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 10002001000121 - 2¹⁰ = 10002000999097 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10002001000099 and 10002001000108.

It is not an unprimeable number, because it can be changed into a prime (10002001000141) 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, 931361 + ... + 4568526.

It is an arithmetic number, because the mean of its divisors is an integer number (1346433081168).

Almost surely, 2^{10002001000121} is an apocalyptic number.

It is an amenable number.

10002001000121 is a deficient number, since it is larger than the sum of its proper divisors (769463649223).

10002001000121 is a wasteful number, since it uses less digits than its factorization.

10002001000121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5639791.

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

Adding to 10002001000121 its reverse (12100010020001), we get a palindrome (22102011020122).

The spelling of 10002001000121 in words is "ten trillion, two billion, one million, one hundred twenty-one", and thus it is an aban number.