21221102222003 has 2 divisors, whose sum is σ = 21221102222004. Its totient is φ = 21221102222002.

The previous prime is 21221102221937. The next prime is 21221102222029. The reversal of 21221102222003 is 30022220112212.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21221102222003 - 2¹⁸ = 21221101959859 is a prime.

It is not a weakly prime, because it can be changed into another prime (21221102212003) 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 as a sum of consecutive naturals, namely, 10610551111001 + 10610551111002.

It is an arithmetic number, because the mean of its divisors is an integer number (10610551111002).

Almost surely, 2^{21221102222003} is an apocalyptic number.

21221102222003 is a deficient number, since it is larger than the sum of its proper divisors (1).

21221102222003 is an equidigital number, since it uses as much as digits as its factorization.

21221102222003 is an odious number, because the sum of its binary digits is odd.

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

Adding to 21221102222003 its reverse (30022220112212), we get a palindrome (51243322334215).

The spelling of 21221102222003 in words is "twenty-one trillion, two hundred twenty-one billion, one hundred two million, two hundred twenty-two thousand, three".