21110031203024 has 40 divisors (see below), whose sum is σ = 40976248789728. Its totient is φ = 10535531672960.

The previous prime is 21110031203003. The next prime is 21110031203039. The reversal of 21110031203024 is 42030213001112.

It is a junction number, because it is equal to n+sod(n) for n = 21110031202987 and 21110031203005.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20279714 + ... + 21295230.

Almost surely, 2^{21110031203024} is an apocalyptic number.

It is an amenable number.

21110031203024 is a deficient number, since it is larger than the sum of its proper divisors (19866217586704).

21110031203024 is a wasteful number, since it uses less digits than its factorization.

21110031203024 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1017923 (or 1017917 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 21110031203024 its reverse (42030213001112), we get a palindrome (63140244204136).

The spelling of 21110031203024 in words is "twenty-one trillion, one hundred ten billion, thirty-one million, two hundred three thousand, twenty-four".