21110122131203 has 16 divisors (see below), whose sum is σ = 25396211473920. Its totient is φ = 17141665378176.

The previous prime is 21110122131179. The next prime is 21110122131223. The reversal of 21110122131203 is 30213122101112.

It is a cyclic number.

It is not a de Polignac number, because 21110122131203 - 2⁴⁰ = 20010610503427 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21110122131223) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4162250 + ... + 7716512.

It is an arithmetic number, because the mean of its divisors is an integer number (1587263217120).

Almost surely, 2^{21110122131203} is an apocalyptic number.

21110122131203 is a deficient number, since it is larger than the sum of its proper divisors (4286089342717).

21110122131203 is a wasteful number, since it uses less digits than its factorization.

21110122131203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3598946.

The product of its (nonzero) digits is 144, while the sum is 20.

Adding to 21110122131203 its reverse (30213122101112), we get a palindrome (51323244232315).

The spelling of 21110122131203 in words is "twenty-one trillion, one hundred ten billion, one hundred twenty-two million, one hundred thirty-one thousand, two hundred three".