21101220022303 has 4 divisors (see below), whose sum is σ = 21615883925328. Its totient is φ = 20586556119280.

The previous prime is 21101220022279. The next prime is 21101220022307. The reversal of 21101220022303 is 30322002210112.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 21101220022303 - 2²⁹ = 21100683151391 is a prime.

It is a super-2 number, since 2×21101220022303² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21101220022307) 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 in 3 ways as a sum of consecutive naturals, for example, 257331951451 + ... + 257331951532.

It is an arithmetic number, because the mean of its divisors is an integer number (5403970981332).

Almost surely, 2^{21101220022303} is an apocalyptic number.

21101220022303 is a deficient number, since it is larger than the sum of its proper divisors (514663903025).

21101220022303 is an equidigital number, since it uses as much as digits as its factorization.

21101220022303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 514663903024.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 21101220022303 its reverse (30322002210112), we get a palindrome (51423222232415).

The spelling of 21101220022303 in words is "twenty-one trillion, one hundred one billion, two hundred twenty million, twenty-two thousand, three hundred three".