21303103101 has 16 divisors (see below), whose sum is σ = 32826614400. Its totient is φ = 12036423168.

The previous prime is 21303103097. The next prime is 21303103141. The reversal of 21303103101 is 10130130312.

It is not a de Polignac number, because 21303103101 - 2² = 21303103097 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21303103141) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5697196 + ... + 5700933.

It is an arithmetic number, because the mean of its divisors is an integer number (2051663400).

Almost surely, 2^21303103101 is an apocalyptic number.

21303103101 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

21303103101 is a deficient number, since it is larger than the sum of its proper divisors (11523511299).

21303103101 is a wasteful number, since it uses less digits than its factorization.

21303103101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11398228.

The product of its (nonzero) digits is 54, while the sum is 15.

Adding to 21303103101 its reverse (10130130312), we get a palindrome (31433233413).

The spelling of 21303103101 in words is "twenty-one billion, three hundred three million, one hundred three thousand, one hundred one".