21022120112203 has 16 divisors (see below), whose sum is σ = 24644838891456. Its totient is φ = 17555490178560.

The previous prime is 21022120112197. The next prime is 21022120112219. The reversal of 21022120112203 is 30221102122012.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21022120112203 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21022120112303) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 49754026 + ... + 50174767.

It is an arithmetic number, because the mean of its divisors is an integer number (1540302430716).

Almost surely, 2^{21022120112203} is an apocalyptic number.

21022120112203 is a deficient number, since it is larger than the sum of its proper divisors (3622718779253).

21022120112203 is an equidigital number, since it uses as much as digits as its factorization.

21022120112203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99929574.

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 21022120112203 its reverse (30221102122012), we get a palindrome (51243222234215).

The spelling of 21022120112203 in words is "twenty-one trillion, twenty-two billion, one hundred twenty million, one hundred twelve thousand, two hundred three".