21102300503 has 8 divisors (see below), whose sum is σ = 21435475440. Its totient is φ = 20769661440.

The previous prime is 21102300493. The next prime is 21102300509. The reversal of 21102300503 is 30500320112.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 21102300503 - 2¹² = 21102296407 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 (21102300509) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 54218 + ... + 212471.

It is an arithmetic number, because the mean of its divisors is an integer number (2679434430).

Almost surely, 2^21102300503 is an apocalyptic number.

21102300503 is a deficient number, since it is larger than the sum of its proper divisors (333174937).

21102300503 is a wasteful number, since it uses less digits than its factorization.

21102300503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 267937.

The product of its (nonzero) digits is 180, while the sum is 17.

Adding to 21102300503 its reverse (30500320112), we get a palindrome (51602620615).

The spelling of 21102300503 in words is "twenty-one billion, one hundred two million, three hundred thousand, five hundred three".