10111110021 has 6 divisors (see below), whose sum is σ = 14604936710. Its totient is φ = 6740740008.

The previous prime is 10111110019. The next prime is 10111110029. The reversal of 10111110021 is 12001111101.

10111110021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 5463279396 + 4647830625 = 73914^2 + 68175^2 .

It is not a de Polignac number, because 10111110021 - 2¹ = 10111110019 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9), and also a Moran number because the ratio is a prime number: 1123456669 = 10111110021 / (1 + 0 + 1 + 1 + 1 + 1 + 1 + 0 + 0 + 2 + 1).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10111109985 and 10111110012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10111110029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 561728326 + ... + 561728343.

Almost surely, 2^10111110021 is an apocalyptic number.

It is an amenable number.

10111110021 is a deficient number, since it is larger than the sum of its proper divisors (4493826689).

10111110021 is a wasteful number, since it uses less digits than its factorization.

10111110021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1123456675 (or 1123456672 counting only the distinct ones).

The product of its (nonzero) digits is 2, while the sum is 9.

Adding to 10111110021 its reverse (12001111101), we get a palindrome (22112221122).

The spelling of 10111110021 in words is "ten billion, one hundred eleven million, one hundred ten thousand, twenty-one".