10343121021 has 24 divisors (see below), whose sum is σ = 15269960160. Its totient is φ = 6744420000.

The previous prime is 10343121001. The next prime is 10343121049. The reversal of 10343121021 is 12012134301.

10343121021 is a `hidden beast` number, since 1 + 0 + 3 + 431 + 210 + 21 = 666.

It is not a de Polignac number, because 10343121021 - 2⁵ = 10343120989 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 10343120985 and 10343121003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10343121001) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 45646 + ... + 150896.

It is an arithmetic number, because the mean of its divisors is an integer number (636248340).

Almost surely, 2^10343121021 is an apocalyptic number.

It is an amenable number.

10343121021 is a deficient number, since it is larger than the sum of its proper divisors (4926839139).

10343121021 is a wasteful number, since it uses less digits than its factorization.

10343121021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105497 (or 105494 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 10343121021 its reverse (12012134301), we get a palindrome (22355255322).

The spelling of 10343121021 in words is "ten billion, three hundred forty-three million, one hundred twenty-one thousand, twenty-one".