10010111010121 has 4 divisors (see below), whose sum is σ = 10014315175044. Its totient is φ = 10005906845200.

The previous prime is 10010111010077. The next prime is 10010111010167. The reversal of 10010111010121 is 12101011101001.

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 63725953600 + 9946385056521 = 252440^2 + 3153789^2 .

It is a cyclic number.

It is not a de Polignac number, because 10010111010121 - 2³⁵ = 9975751271753 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10010111010098 and 10010111010107.

It is not an unprimeable number, because it can be changed into a prime (10010111019121) 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 3 ways as a sum of consecutive naturals, for example, 2102078890 + ... + 2102083651.

It is an arithmetic number, because the mean of its divisors is an integer number (2503578793761).

Almost surely, 2^{10010111010121} is an apocalyptic number.

It is an amenable number.

10010111010121 is a deficient number, since it is larger than the sum of its proper divisors (4204164923).

10010111010121 is an equidigital number, since it uses as much as digits as its factorization.

10010111010121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4204164922.

The product of its (nonzero) digits is 2, while the sum is 10.

Adding to 10010111010121 its reverse (12101011101001), we get a palindrome (22111122111122).

The spelling of 10010111010121 in words is "ten trillion, ten billion, one hundred eleven million, ten thousand, one hundred twenty-one".