10921129 has 4 divisors (see below), whose sum is σ = 11187540. Its totient is φ = 10654720.

The previous prime is 10921121. The next prime is 10921147. The reversal of 10921129 is 92112901.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 5290000 + 5631129 = 2300^2 + 2373^2 .

It is a cyclic number.

It is not a de Polignac number, because 10921129 - 2³ = 10921121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10921121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 133144 + ... + 133225.

It is an arithmetic number, because the mean of its divisors is an integer number (2796885).

Almost surely, 2^10921129 is an apocalyptic number.

It is an amenable number.

10921129 is a deficient number, since it is larger than the sum of its proper divisors (266411).

10921129 is an equidigital number, since it uses as much as digits as its factorization.

10921129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 266410.

The product of its (nonzero) digits is 324, while the sum is 25.

The square root of 10921129 is about 3304.7131494276. The cubic root of 10921129 is about 221.8651955993.

The spelling of 10921129 in words is "ten million, nine hundred twenty-one thousand, one hundred twenty-nine".