10421111403 has 8 divisors (see below), whose sum is σ = 15438683600. Its totient is φ = 6947407584.

The previous prime is 10421111399. The next prime is 10421111411. The reversal of 10421111403 is 30411112401.

10421111403 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 10421111403 - 2² = 10421111399 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10421111303) 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 7 ways as a sum of consecutive naturals, for example, 192983518 + ... + 192983571.

It is an arithmetic number, because the mean of its divisors is an integer number (1929835450).

Almost surely, 2^10421111403 is an apocalyptic number.

10421111403 is a deficient number, since it is larger than the sum of its proper divisors (5017572197).

10421111403 is an equidigital number, since it uses as much as digits as its factorization.

10421111403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 385967098 (or 385967092 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

Adding to 10421111403 its reverse (30411112401), we get a palindrome (40832223804).

The spelling of 10421111403 in words is "ten billion, four hundred twenty-one million, one hundred eleven thousand, four hundred three".