10881921 has 16 divisors (see below), whose sum is σ = 16032384. Its totient is φ = 6530304.

The previous prime is 10881877. The next prime is 10881929. The reversal of 10881921 is 12918801.

10881921 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 10881921 - 2¹⁰ = 10880897 is a prime.

It is not an unprimeable number, because it can be changed into a prime (10881929) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3466 + ... + 5811.

It is an arithmetic number, because the mean of its divisors is an integer number (1002024).

Almost surely, 2^10881921 is an apocalyptic number.

It is an amenable number.

10881921 is a deficient number, since it is larger than the sum of its proper divisors (5150463).

10881921 is a wasteful number, since it uses less digits than its factorization.

10881921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9320.

The product of its (nonzero) digits is 1152, while the sum is 30.

The square root of 10881921 is about 3298.7756819766. The cubic root of 10881921 is about 221.5993707815.

The spelling of 10881921 in words is "ten million, eight hundred eighty-one thousand, nine hundred twenty-one".