21014424503 has 8 divisors (see below), whose sum is σ = 21626717472. Its totient is φ = 20404465056.

The previous prime is 21014424461. The next prime is 21014424527. The reversal of 21014424503 is 30542441012.

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

It is a cyclic number.

It is not a de Polignac number, because 21014424503 - 2¹² = 21014420407 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21014424103) 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, 565100 + ... + 601137.

It is an arithmetic number, because the mean of its divisors is an integer number (2703339684).

Almost surely, 2^21014424503 is an apocalyptic number.

21014424503 is a deficient number, since it is larger than the sum of its proper divisors (612292969).

21014424503 is a wasteful number, since it uses less digits than its factorization.

21014424503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1166761.

The product of its (nonzero) digits is 3840, while the sum is 26.

Adding to 21014424503 its reverse (30542441012), we get a palindrome (51556865515).

The spelling of 21014424503 in words is "twenty-one billion, fourteen million, four hundred twenty-four thousand, five hundred three".