10121261 has 8 divisors (see below), whose sum is σ = 10507800. Its totient is φ = 9737280.

The previous prime is 10121257. The next prime is 10121299. The reversal of 10121261 is 16212101.

10121261 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 72361 + 10048900 = 269^2 + 3170^2 .

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 10121261 - 2² = 10121257 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10121161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11795 + ... + 12623.

It is an arithmetic number, because the mean of its divisors is an integer number (1313475).

Almost surely, 2^10121261 is an apocalyptic number.

It is an amenable number.

10121261 is a deficient number, since it is larger than the sum of its proper divisors (386539).

10121261 is an equidigital number, since it uses as much as digits as its factorization.

10121261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1279.

The product of its (nonzero) digits is 24, while the sum is 14.

The square root of 10121261 is about 3181.3929339206. The cubic root of 10121261 is about 216.3108022865.

Adding to 10121261 its reverse (16212101), we get a palindrome (26333362).

The spelling of 10121261 in words is "ten million, one hundred twenty-one thousand, two hundred sixty-one".