10001000000121 has 64 divisors (see below), whose sum is σ = 15225196492800. Its totient is φ = 5788652829696.

The previous prime is 10001000000041. The next prime is 10001000000143. The reversal of 10001000000121 is 12100000010001.

It is not a de Polignac number, because 10001000000121 - 2¹⁰ = 10000999999097 is a prime.

It is not an unprimeable number, because it can be changed into a prime (10001000100121) 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 63 ways as a sum of consecutive naturals, for example, 60303505 + ... + 60469121.

It is an arithmetic number, because the mean of its divisors is an integer number (237893695200).

Almost surely, 2^{10001000000121} is an apocalyptic number.

It is an amenable number.

10001000000121 is a deficient number, since it is larger than the sum of its proper divisors (5224196492679).

10001000000121 is a wasteful number, since it uses less digits than its factorization.

10001000000121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166238.

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

Adding to 10001000000121 its reverse (12100000010001), we get a palindrome (22101000010122).

The spelling of 10001000000121 in words is "ten trillion, one billion, one hundred twenty-one", and thus it is an aban number.