21301112103 has 16 divisors (see below), whose sum is σ = 29469648000. Its totient is φ = 13669619040.

The previous prime is 21301112101. The next prime is 21301112117. The reversal of 21301112103 is 30121110312.

It is a happy number.

It is not a de Polignac number, because 21301112103 - 2¹ = 21301112101 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21301112101) 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 15 ways as a sum of consecutive naturals, for example, 341053 + ... + 398646.

It is an arithmetic number, because the mean of its divisors is an integer number (1841853000).

Almost surely, 2^21301112103 is an apocalyptic number.

21301112103 is a deficient number, since it is larger than the sum of its proper divisors (8168535897).

21301112103 is a wasteful number, since it uses less digits than its factorization.

21301112103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 740062.

The product of its (nonzero) digits is 36, while the sum is 15.

Adding to 21301112103 its reverse (30121110312), we get a palindrome (51422222415).

The spelling of 21301112103 in words is "twenty-one billion, three hundred one million, one hundred twelve thousand, one hundred three".