10128121 has 8 divisors (see below), whose sum is σ = 10950080. Its totient is φ = 9335088.

The previous prime is 10128109. The next prime is 10128127. The reversal of 10128121 is 12182101.

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 10128121 - 2⁵ = 10128089 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 10128095 and 10128104.

It is not an unprimeable number, because it can be changed into a prime (10128127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6501 + ... + 7906.

It is an arithmetic number, because the mean of its divisors is an integer number (1368760).

Almost surely, 2^10128121 is an apocalyptic number.

It is an amenable number.

10128121 is a deficient number, since it is larger than the sum of its proper divisors (821959).

10128121 is a wasteful number, since it uses less digits than its factorization.

10128121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14463.

The product of its (nonzero) digits is 32, while the sum is 16.

The square root of 10128121 is about 3182.4708953893. The cubic root of 10128121 is about 216.3596617115.

The spelling of 10128121 in words is "ten million, one hundred twenty-eight thousand, one hundred twenty-one".