21102223200203 has 4 divisors (see below), whose sum is σ = 21102304540848. Its totient is φ = 21102141859560.

The previous prime is 21102223200167. The next prime is 21102223200229. The reversal of 21102223200203 is 30200232220112.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 21102223200203 - 2¹⁸ = 21102222938059 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21102223200263) 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 3 ways as a sum of consecutive naturals, for example, 40279928 + ... + 40800453.

It is an arithmetic number, because the mean of its divisors is an integer number (5275576135212).

Almost surely, 2^{21102223200203} is an apocalyptic number.

21102223200203 is a deficient number, since it is larger than the sum of its proper divisors (81340645).

21102223200203 is an equidigital number, since it uses as much as digits as its factorization.

21102223200203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81340644.

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 21102223200203 its reverse (30200232220112), we get a palindrome (51302455420315).

The spelling of 21102223200203 in words is "twenty-one trillion, one hundred two billion, two hundred twenty-three million, two hundred thousand, two hundred three".