21119103 has 8 divisors (see below), whose sum is σ = 31287600. Its totient is φ = 14079384.

The previous prime is 21119093. The next prime is 21119107. The reversal of 21119103 is 30191112.

It is not a de Polignac number, because 21119103 - 2⁶ = 21119039 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21119107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 391068 + ... + 391121.

It is an arithmetic number, because the mean of its divisors is an integer number (3910950).

Almost surely, 2^21119103 is an apocalyptic number.

21119103 is a deficient number, since it is larger than the sum of its proper divisors (10168497).

21119103 is an equidigital number, since it uses as much as digits as its factorization.

21119103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 782198 (or 782192 counting only the distinct ones).

The product of its (nonzero) digits is 54, while the sum is 18.

The square root of 21119103 is about 4595.5525239083. The cubic root of 21119103 is about 276.4130158561.

The spelling of 21119103 in words is "twenty-one million, one hundred nineteen thousand, one hundred three".