10403115521421 has 24 divisors (see below), whose sum is σ = 16139269915680. Its totient is φ = 5943228070752.

The previous prime is 10403115521417. The next prime is 10403115521489. The reversal of 10403115521421 is 12412551130401.

It is not a de Polignac number, because 10403115521421 - 2² = 10403115521417 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10403115526421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7766806 + ... + 9007191.

It is an arithmetic number, because the mean of its divisors is an integer number (672469579820).

Almost surely, 2^{10403115521421} is an apocalyptic number.

It is an amenable number.

10403115521421 is a deficient number, since it is larger than the sum of its proper divisors (5736154394259).

10403115521421 is a wasteful number, since it uses less digits than its factorization.

10403115521421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16778233 (or 16778226 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 30.

Adding to 10403115521421 its reverse (12412551130401), we get a palindrome (22815666651822).

The spelling of 10403115521421 in words is "ten trillion, four hundred three billion, one hundred fifteen million, five hundred twenty-one thousand, four hundred twenty-one".