21113144022503 has 24 divisors (see below), whose sum is σ = 23462554059360. Its totient is φ = 18983450079360.

The previous prime is 21113144022497. The next prime is 21113144022539. The reversal of 21113144022503 is 30522044131112.

It is a happy number.

It is not a de Polignac number, because 21113144022503 - 2²⁶ = 21113076913639 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21113144022563) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8880068 + ... + 11003721.

It is an arithmetic number, because the mean of its divisors is an integer number (977606419140).

Almost surely, 2^{21113144022503} is an apocalyptic number.

21113144022503 is a deficient number, since it is larger than the sum of its proper divisors (2349410036857).

21113144022503 is a wasteful number, since it uses less digits than its factorization.

21113144022503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19883979 (or 19883966 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 29.

Adding to 21113144022503 its reverse (30522044131112), we get a palindrome (51635188153615).

The spelling of 21113144022503 in words is "twenty-one trillion, one hundred thirteen billion, one hundred forty-four million, twenty-two thousand, five hundred three".