21300103031003 has 4 divisors (see below), whose sum is σ = 21301375379328. Its totient is φ = 21298830682680.

The previous prime is 21300103030981. The next prime is 21300103031021. The reversal of 21300103031003 is 30013030100312.

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

It is a cyclic number.

It is not a de Polignac number, because 21300103031003 - 2¹² = 21300103026907 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21300103031033) 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 3 ways as a sum of consecutive naturals, for example, 636149051 + ... + 636182532.

It is an arithmetic number, because the mean of its divisors is an integer number (5325343844832).

Almost surely, 2^{21300103031003} is an apocalyptic number.

21300103031003 is a deficient number, since it is larger than the sum of its proper divisors (1272348325).

21300103031003 is a wasteful number, since it uses less digits than its factorization.

21300103031003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1272348324.

The product of its (nonzero) digits is 162, while the sum is 17.

Adding to 21300103031003 its reverse (30013030100312), we get a palindrome (51313133131315).

The spelling of 21300103031003 in words is "twenty-one trillion, three hundred billion, one hundred three million, thirty-one thousand, three".