21110112021203 has 8 divisors (see below), whose sum is σ = 21155597162928. Its totient is φ = 21064673846944.

The previous prime is 21110112021133. The next prime is 21110112021293. The reversal of 21110112021203 is 30212021101112.

It is a happy number.

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 21110112021203 - 2¹⁴ = 21110112004819 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21110112021293) by changing a digit.

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, 10841900 + ... + 12639897.

It is an arithmetic number, because the mean of its divisors is an integer number (2644449645366).

Almost surely, 2^{21110112021203} is an apocalyptic number.

21110112021203 is a deficient number, since it is larger than the sum of its proper divisors (45485141725).

21110112021203 is a wasteful number, since it uses less digits than its factorization.

21110112021203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23483733.

The product of its (nonzero) digits is 48, while the sum is 17.

Adding to 21110112021203 its reverse (30212021101112), we get a palindrome (51322133122315).

The spelling of 21110112021203 in words is "twenty-one trillion, one hundred ten billion, one hundred twelve million, twenty-one thousand, two hundred three".