10909121 has 4 divisors (see below), whose sum is σ = 11550852. Its totient is φ = 10267392.

The previous prime is 10909109. The next prime is 10909139. The reversal of 10909121 is 12190901.

10909121 = 2335² + 2336².

10909121 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 an emirpimes, since its reverse is a distinct semiprime: 12190901 = 53 ⋅230017.

It can be written as a sum of positive squares in 2 ways, for example, as 5456896 + 5452225 = 2336^2 + 2335^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10909121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10909181) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 320840 + ... + 320873.

It is an arithmetic number, because the mean of its divisors is an integer number (2887713).

Almost surely, 2^10909121 is an apocalyptic number.

10909121 is the 2336-th centered square number.

It is an amenable number.

10909121 is a deficient number, since it is larger than the sum of its proper divisors (641731).

10909121 is an equidigital number, since it uses as much as digits as its factorization.

10909121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 641730.

The product of its (nonzero) digits is 162, while the sum is 23.

The square root of 10909121 is about 3302.8958506135. The cubic root of 10909121 is about 221.7838507036.

The spelling of 10909121 in words is "ten million, nine hundred nine thousand, one hundred twenty-one".