21222102102203 has 2 divisors, whose sum is σ = 21222102102204. Its totient is φ = 21222102102202.

The previous prime is 21222102102163. The next prime is 21222102102217. The reversal of 21222102102203 is 30220120122212.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21222102102203 is a prime.

It is not a weakly prime, because it can be changed into another prime (21222102102233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10611051051101 + 10611051051102.

It is an arithmetic number, because the mean of its divisors is an integer number (10611051051102).

Almost surely, 2^{21222102102203} is an apocalyptic number.

21222102102203 is a deficient number, since it is larger than the sum of its proper divisors (1).

21222102102203 is an equidigital number, since it uses as much as digits as its factorization.

21222102102203 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 21222102102203 its reverse (30220120122212), we get a palindrome (51442222224415).

The spelling of 21222102102203 in words is "twenty-one trillion, two hundred twenty-two billion, one hundred two million, one hundred two thousand, two hundred three".