10421003121 has 32 divisors (see below), whose sum is σ = 14806268928. Its totient is φ = 6507889920.

The previous prime is 10421003113. The next prime is 10421003123. The reversal of 10421003121 is 12130012401.

It is not a de Polignac number, because 10421003121 - 2³ = 10421003113 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 10421003121.

It is not an unprimeable number, because it can be changed into a prime (10421003123) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 670191 + ... + 685563.

It is an arithmetic number, because the mean of its divisors is an integer number (462695904).

Almost surely, 2^10421003121 is an apocalyptic number.

It is an amenable number.

10421003121 is a deficient number, since it is larger than the sum of its proper divisors (4385265807).

10421003121 is a wasteful number, since it uses less digits than its factorization.

10421003121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15641.

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 10421003121 its reverse (12130012401), we get a palindrome (22551015522).

The spelling of 10421003121 in words is "ten billion, four hundred twenty-one million, three thousand, one hundred twenty-one".