21103101203 has 8 divisors (see below), whose sum is σ = 22247410320. Its totient is φ = 19962154080.

The previous prime is 21103101193. The next prime is 21103101211. The reversal of 21103101203 is 30210130112.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21103101203 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21103121203) 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 7 ways as a sum of consecutive naturals, for example, 827600 + ... + 852717.

It is an arithmetic number, because the mean of its divisors is an integer number (2780926290).

Almost surely, 2^21103101203 is an apocalyptic number.

21103101203 is a deficient number, since it is larger than the sum of its proper divisors (1144309117).

21103101203 is a wasteful number, since it uses less digits than its factorization.

21103101203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1680997.

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

Adding to 21103101203 its reverse (30210130112), we get a palindrome (51313231315).

The spelling of 21103101203 in words is "twenty-one billion, one hundred three million, one hundred one thousand, two hundred three".