21102103301 has 4 divisors (see below), whose sum is σ = 21288847692. Its totient is φ = 20915358912.

The previous prime is 21102103291. The next prime is 21102103307. The reversal of 21102103301 is 10330120112.

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

It can be written as a sum of positive squares in 2 ways, for example, as 3410443201 + 17691660100 = 58399^2 + 133010^2 .

It is a cyclic number.

It is not a de Polignac number, because 21102103301 - 2²⁶ = 21034994437 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 (21102103307) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 93372026 + ... + 93372251.

It is an arithmetic number, because the mean of its divisors is an integer number (5322211923).

Almost surely, 2^21102103301 is an apocalyptic number.

It is an amenable number.

21102103301 is a deficient number, since it is larger than the sum of its proper divisors (186744391).

21102103301 is a wasteful number, since it uses less digits than its factorization.

21102103301 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 186744390.

The product of its (nonzero) digits is 36, while the sum is 14.

Adding to 21102103301 its reverse (10330120112), we get a palindrome (31432223413).

The spelling of 21102103301 in words is "twenty-one billion, one hundred two million, one hundred three thousand, three hundred one".