21110313020203 has 32 divisors (see below), whose sum is σ = 23512674758400. Its totient is φ = 18792130896000.

The previous prime is 21110313020197. The next prime is 21110313020221. The reversal of 21110313020203 is 30202031301112.

It is a de Polignac number, because none of the positive numbers 2^k-21110313020203 is a prime.

It is a super-2 number, since 2×21110313020203² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21110313020003) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 127588573 + ... + 127753921.

It is an arithmetic number, because the mean of its divisors is an integer number (734771086200).

Almost surely, 2^{21110313020203} is an apocalyptic number.

21110313020203 is a deficient number, since it is larger than the sum of its proper divisors (2402361738197).

21110313020203 is a wasteful number, since it uses less digits than its factorization.

21110313020203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166459.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 21110313020203 its reverse (30202031301112), we get a palindrome (51312344321315).

The spelling of 21110313020203 in words is "twenty-one trillion, one hundred ten billion, three hundred thirteen million, twenty thousand, two hundred three".