21222120011103 has 12 divisors (see below), whose sum is σ = 33440916381288. Its totient is φ = 12861890915760.

The previous prime is 21222120011051. The next prime is 21222120011167. The reversal of 21222120011103 is 30111002122212.

It is not a de Polignac number, because 21222120011103 - 2¹³ = 21222120002911 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21222120011003) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 107182424200 + ... + 107182424397.

It is an arithmetic number, because the mean of its divisors is an integer number (2786743031774).

Almost surely, 2^{21222120011103} is an apocalyptic number.

21222120011103 is a deficient number, since it is larger than the sum of its proper divisors (12218796370185).

21222120011103 is a wasteful number, since it uses less digits than its factorization.

21222120011103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 214364848614 (or 214364848611 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

Adding to 21222120011103 its reverse (30111002122212), we get a palindrome (51333122133315).

The spelling of 21222120011103 in words is "twenty-one trillion, two hundred twenty-two billion, one hundred twenty million, eleven thousand, one hundred three".