10111100021 has 16 divisors (see below), whose sum is σ = 11615711040. Its totient is φ = 8704465920.

The previous prime is 10111099997. The next prime is 10111100029. The reversal of 10111100021 is 12000111101.

It is a happy number.

10111100021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 10111100021 - 2¹⁰ = 10111098997 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10111099981 and 10111100008.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10111100029) 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 15 ways as a sum of consecutive naturals, for example, 566591 + ... + 584163.

It is an arithmetic number, because the mean of its divisors is an integer number (725981940).

Almost surely, 2^10111100021 is an apocalyptic number.

10111100021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

10111100021 is a deficient number, since it is larger than the sum of its proper divisors (1504611019).

10111100021 is a wasteful number, since it uses less digits than its factorization.

10111100021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20356.

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

Adding to 10111100021 its reverse (12000111101), we get a palindrome (22111211122).

The spelling of 10111100021 in words is "ten billion, one hundred eleven million, one hundred thousand, twenty-one".