10121310321 has 4 divisors (see below), whose sum is σ = 13495080432. Its totient is φ = 6747540212.

The previous prime is 10121310263. The next prime is 10121310343. The reversal of 10121310321 is 12301312101.

It is a happy number.

10121310321 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 10121310321 - 2⁷ = 10121310193 is a prime.

It is a super-2 number, since 2×10121310321² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 10121310321.

It is not an unprimeable number, because it can be changed into a prime (10121310371) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1686885051 + ... + 1686885056.

It is an arithmetic number, because the mean of its divisors is an integer number (3373770108).

Almost surely, 2^10121310321 is an apocalyptic number.

It is an amenable number.

10121310321 is a deficient number, since it is larger than the sum of its proper divisors (3373770111).

10121310321 is an equidigital number, since it uses as much as digits as its factorization.

10121310321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3373770110.

The product of its (nonzero) digits is 36, while the sum is 15.

Adding to 10121310321 its reverse (12301312101), we get a palindrome (22422622422).

The spelling of 10121310321 in words is "ten billion, one hundred twenty-one million, three hundred ten thousand, three hundred twenty-one".