10921916881 has 8 divisors (see below), whose sum is σ = 11177359424. Its totient is φ = 10666540080.

The previous prime is 10921916879. The next prime is 10921916921. The reversal of 10921916881 is 18861912901.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 10921916881 - 2¹ = 10921916879 is a prime.

It is a super-2 number, since 2×10921916881² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10921916821) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 526771 + ... + 547111.

It is an arithmetic number, because the mean of its divisors is an integer number (1397169928).

Almost surely, 2^10921916881 is an apocalyptic number.

It is an amenable number.

10921916881 is a deficient number, since it is larger than the sum of its proper divisors (255442543).

10921916881 is a wasteful number, since it uses less digits than its factorization.

10921916881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32871.

The product of its (nonzero) digits is 62208, while the sum is 46.

The spelling of 10921916881 in words is "ten billion, nine hundred twenty-one million, nine hundred sixteen thousand, eight hundred eighty-one".