10001000121 has 8 divisors (see below), whose sum is σ = 15239619264. Its totient is φ = 5714857200.

The previous prime is 10001000089. The next prime is 10001000123. The reversal of 10001000121 is 12100010001.

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

It is not a de Polignac number, because 10001000121 - 2⁵ = 10001000089 is a prime.

It is not an unprimeable number, because it can be changed into a prime (10001000123) 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, 238119030 + ... + 238119071.

It is an arithmetic number, because the mean of its divisors is an integer number (1904952408).

Almost surely, 2^10001000121 is an apocalyptic number.

It is an amenable number.

10001000121 is a deficient number, since it is larger than the sum of its proper divisors (5238619143).

10001000121 is an equidigital number, since it uses as much as digits as its factorization.

10001000121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 476238111.

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

Adding to 10001000121 its reverse (12100010001), we get a palindrome (22101010122).

The spelling of 10001000121 in words is "ten billion, one million, one hundred twenty-one", and thus it is an aban number.