21101113303 has 16 divisors (see below), whose sum is σ = 22554132480. Its totient is φ = 19672508800.

The previous prime is 21101113301. The next prime is 21101113339. The reversal of 21101113303 is 30331110112.

It is not a de Polignac number, because 21101113303 - 2¹ = 21101113301 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21101113301) 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 in 15 ways as a sum of consecutive naturals, for example, 762438 + ... + 789628.

It is an arithmetic number, because the mean of its divisors is an integer number (1409633280).

Almost surely, 2^21101113303 is an apocalyptic number.

21101113303 is a deficient number, since it is larger than the sum of its proper divisors (1453019177).

21101113303 is a wasteful number, since it uses less digits than its factorization.

21101113303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27638.

The product of its (nonzero) digits is 54, while the sum is 16.

Adding to 21101113303 its reverse (30331110112), we get a palindrome (51432223415).

The spelling of 21101113303 in words is "twenty-one billion, one hundred one million, one hundred thirteen thousand, three hundred three".