1011001000121 has 8 divisors (see below), whose sum is σ = 1155489235584. Its totient is φ = 866527644960.

The previous prime is 1011001000099. The next prime is 1011001000199. The reversal of 1011001000121 is 1210001001101.

It is a happy number.

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 1011001000121 - 2¹⁴ = 1011000983737 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1011001000099 and 1011001000108.

It is not an unprimeable number, because it can be changed into a prime (1011001020121) 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 7 ways as a sum of consecutive naturals, for example, 3574100 + ... + 3846581.

It is an arithmetic number, because the mean of its divisors is an integer number (144436154448).

Almost surely, 2^{1011001000121} is an apocalyptic number.

It is an amenable number.

1011001000121 is a deficient number, since it is larger than the sum of its proper divisors (144488235463).

1011001000121 is an equidigital number, since it uses as much as digits as its factorization.

1011001000121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7440151.

The product of its (nonzero) digits is 2, while the sum is 8.

Adding to 1011001000121 its reverse (1210001001101), we get a palindrome (2221002001222).

The spelling of 1011001000121 in words is "one trillion, eleven billion, one million, one hundred twenty-one", and thus it is an aban number.