21113110003 has 8 divisors (see below), whose sum is σ = 21463577280. Its totient is φ = 20764723200.

The previous prime is 21113109991. The next prime is 21113110009. The reversal of 21113110003 is 30001131112.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 21113110003 - 2⁵ = 21113109971 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21113110009) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 499648 + ... + 540253.

It is an arithmetic number, because the mean of its divisors is an integer number (2682947160).

Almost surely, 2^21113110003 is an apocalyptic number.

21113110003 is a deficient number, since it is larger than the sum of its proper divisors (350467277).

21113110003 is a wasteful number, since it uses less digits than its factorization.

21113110003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1040237.

The product of its (nonzero) digits is 18, while the sum is 13.

Adding to 21113110003 its reverse (30001131112), we get a palindrome (51114241115).

The spelling of 21113110003 in words is "twenty-one billion, one hundred thirteen million, one hundred ten thousand, three".