21114040403 has 4 divisors (see below), whose sum is σ = 21114339480. Its totient is φ = 21113741328.

The previous prime is 21114040393. The next prime is 21114040439. The reversal of 21114040403 is 30404041112.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 21114040403 - 2⁸ = 21114040147 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21114940403) 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 3 ways as a sum of consecutive naturals, for example, 21788 + ... + 206646.

It is an arithmetic number, because the mean of its divisors is an integer number (5278584870).

Almost surely, 2^21114040403 is an apocalyptic number.

21114040403 is a deficient number, since it is larger than the sum of its proper divisors (299077).

21114040403 is a wasteful number, since it uses less digits than its factorization.

21114040403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 299076.

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 21114040403 its reverse (30404041112), we get a palindrome (51518081515).

The spelling of 21114040403 in words is "twenty-one billion, one hundred fourteen million, forty thousand, four hundred three".