10666121 has 4 divisors (see below), whose sum is σ = 10695552. Its totient is φ = 10636692.

The previous prime is 10666093. The next prime is 10666129. The reversal of 10666121 is 12166601.

10666121 is digitally balanced in base 3, 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 10666121 - 2⁶ = 10666057 is a prime.

It is a super-2 number, since 2×10666121² = 227532274373282, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10666129) 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, 14165 + ... + 14898.

It is an arithmetic number, because the mean of its divisors is an integer number (2673888).

Almost surely, 2^10666121 is an apocalyptic number.

It is an amenable number.

10666121 is a deficient number, since it is larger than the sum of its proper divisors (29431).

10666121 is an equidigital number, since it uses as much as digits as its factorization.

10666121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29430.

The product of its (nonzero) digits is 432, while the sum is 23.

The square root of 10666121 is about 3265.9027848361. The cubic root of 10666121 is about 220.1247295464.

The spelling of 10666121 in words is "ten million, six hundred sixty-six thousand, one hundred twenty-one".