10910911821 has 4 divisors (see below), whose sum is σ = 14547882432. Its totient is φ = 7273941212.

The previous prime is 10910911811. The next prime is 10910911829. The reversal of 10910911821 is 12811901901.

10910911821 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 10910911821 - 2⁵ = 10910911789 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10910911829) 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 3 ways as a sum of consecutive naturals, for example, 1818485301 + ... + 1818485306.

It is an arithmetic number, because the mean of its divisors is an integer number (3636970608).

Almost surely, 2^10910911821 is an apocalyptic number.

It is an amenable number.

10910911821 is a deficient number, since it is larger than the sum of its proper divisors (3636970611).

10910911821 is an equidigital number, since it uses as much as digits as its factorization.

10910911821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3636970610.

The product of its (nonzero) digits is 1296, while the sum is 33.

The spelling of 10910911821 in words is "ten billion, nine hundred ten million, nine hundred eleven thousand, eight hundred twenty-one".