10121565 has 8 divisors (see below), whose sum is σ = 16194528. Its totient is φ = 5398160.

The previous prime is 10121561. The next prime is 10121603. The reversal of 10121565 is 56512101.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 10121565 - 2² = 10121561 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10121561) 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, 337371 + ... + 337400.

It is an arithmetic number, because the mean of its divisors is an integer number (2024316).

Almost surely, 2^10121565 is an apocalyptic number.

10121565 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

10121565 is a deficient number, since it is larger than the sum of its proper divisors (6072963).

10121565 is an equidigital number, since it uses as much as digits as its factorization.

10121565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 674779.

The product of its (nonzero) digits is 300, while the sum is 21.

The square root of 10121565 is about 3181.4407113759. The cubic root of 10121565 is about 216.3129679529.

Adding to 10121565 its reverse (56512101), we get a palindrome (66633666).

The spelling of 10121565 in words is "ten million, one hundred twenty-one thousand, five hundred sixty-five".