10121350405 has 8 divisors (see below), whose sum is σ = 12441855384. Its totient is φ = 7899590400.

The previous prime is 10121350339. The next prime is 10121350409. The reversal of 10121350405 is 50405312101.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 776068164 + 9345282241 = 27858^2 + 96671^2 .

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

It is not a de Polignac number, because 10121350405 - 2²⁷ = 9987132677 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 (10121350409) 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, 24686016 + ... + 24686425.

It is an arithmetic number, because the mean of its divisors is an integer number (1555231923).

Almost surely, 2^10121350405 is an apocalyptic number.

It is an amenable number.

10121350405 is a deficient number, since it is larger than the sum of its proper divisors (2320504979).

10121350405 is an equidigital number, since it uses as much as digits as its factorization.

10121350405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49372487.

The product of its (nonzero) digits is 600, while the sum is 22.

Adding to 10121350405 its reverse (50405312101), we get a palindrome (60526662506).

The spelling of 10121350405 in words is "ten billion, one hundred twenty-one million, three hundred fifty thousand, four hundred five".