21112233203 has 2 divisors, whose sum is σ = 21112233204. Its totient is φ = 21112233202.

The previous prime is 21112233193. The next prime is 21112233221. The reversal of 21112233203 is 30233221112.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21112233203 - 2²⁴ = 21095455987 is a prime.

It is not a weakly prime, because it can be changed into another prime (21112233283) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10556116601 + 10556116602.

It is an arithmetic number, because the mean of its divisors is an integer number (10556116602).

Almost surely, 2^21112233203 is an apocalyptic number.

21112233203 is a deficient number, since it is larger than the sum of its proper divisors (1).

21112233203 is an equidigital number, since it uses as much as digits as its factorization.

21112233203 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 21112233203 its reverse (30233221112), we get a palindrome (51345454315).

The spelling of 21112233203 in words is "twenty-one billion, one hundred twelve million, two hundred thirty-three thousand, two hundred three".