21103101000203 has 2 divisors, whose sum is σ = 21103101000204. Its totient is φ = 21103101000202.

The previous prime is 21103101000181. The next prime is 21103101000211. The reversal of 21103101000203 is 30200010130112.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21103101000203 - 2³² = 21098806032907 is a prime.

It is not a weakly prime, because it can be changed into another prime (21103101000253) 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 as a sum of consecutive naturals, namely, 10551550500101 + 10551550500102.

It is an arithmetic number, because the mean of its divisors is an integer number (10551550500102).

Almost surely, 2^{21103101000203} is an apocalyptic number.

21103101000203 is a deficient number, since it is larger than the sum of its proper divisors (1).

21103101000203 is an equidigital number, since it uses as much as digits as its factorization.

21103101000203 is an odious number, because the sum of its binary digits is odd.

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

Adding to 21103101000203 its reverse (30200010130112), we get a palindrome (51303111130315).

The spelling of 21103101000203 in words is "twenty-one trillion, one hundred three billion, one hundred one million, two hundred three", and thus it is an aban number.