10011121000121 has 4 divisors (see below), whose sum is σ = 10024139363700. Its totient is φ = 9998102636544.

The previous prime is 10011121000099. The next prime is 10011121000147. The reversal of 10011121000121 is 12100012111001.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 7544223555625 + 2466897444496 = 2746675^2 + 1570636^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10011121000121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10011121008121) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6509180636 + ... + 6509182173.

It is an arithmetic number, because the mean of its divisors is an integer number (2506034840925).

Almost surely, 2^{10011121000121} is an apocalyptic number.

It is an amenable number.

10011121000121 is a deficient number, since it is larger than the sum of its proper divisors (13018363579).

10011121000121 is an equidigital number, since it uses as much as digits as its factorization.

10011121000121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13018363578.

The product of its (nonzero) digits is 4, while the sum is 11.

Adding to 10011121000121 its reverse (12100012111001), we get a palindrome (22111133111122).

The spelling of 10011121000121 in words is "ten trillion, eleven billion, one hundred twenty-one million, one hundred twenty-one", and thus it is an aban number.