10121005 has 8 divisors (see below), whose sum is σ = 12223512. Its totient is φ = 8044608.

The previous prime is 10121003. The next prime is 10121009. The reversal of 10121005 is 50012101.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 702244 + 9418761 = 838^2 + 3069^2 .

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 10121005 - 2¹ = 10121003 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10120982 and 10121000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10121003) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5662 + ... + 7231.

It is an arithmetic number, because the mean of its divisors is an integer number (1527939).

Almost surely, 2^10121005 is an apocalyptic number.

It is an amenable number.

10121005 is a deficient number, since it is larger than the sum of its proper divisors (2102507).

10121005 is a wasteful number, since it uses less digits than its factorization.

10121005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13055.

The product of its (nonzero) digits is 10, while the sum is 10.

The square root of 10121005 is about 3181.3526997175. The cubic root of 10121005 is about 216.3089785337.

Adding to 10121005 its reverse (50012101), we get a palindrome (60133106).

The spelling of 10121005 in words is "ten million, one hundred twenty-one thousand, five".