21014203 has 8 divisors (see below), whose sum is σ = 25060608. Its totient is φ = 17228904.

The previous prime is 21014179. The next prime is 21014233. The reversal of 21014203 is 30241012.

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

It is a de Polignac number, because none of the positive numbers 2^k-21014203 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21014233) 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, 65101 + ... + 65422.

It is an arithmetic number, because the mean of its divisors is an integer number (3132576).

Almost surely, 2^21014203 is an apocalyptic number.

21014203 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

21014203 is a deficient number, since it is larger than the sum of its proper divisors (4046405).

21014203 is a wasteful number, since it uses less digits than its factorization.

21014203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130553.

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 21014203 is about 4584.1251073678. The cubic root of 21014203 is about 275.9546020339.

Adding to 21014203 its reverse (30241012), we get a palindrome (51255215).

It can be divided in two parts, 2101 and 4203, that multiplied together give a triangular number (8830503 = T₄₂₀₂).

The spelling of 21014203 in words is "twenty-one million, fourteen thousand, two hundred three".