21214020003 has 8 divisors (see below), whose sum is σ = 30856756416. Its totient is φ = 12856981800.

The previous prime is 21214019951. The next prime is 21214020007. The reversal of 21214020003 is 30002041212.

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

It is not a de Polignac number, because 21214020003 - 2²⁵ = 21180465571 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21214020007) 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, 321424513 + ... + 321424578.

It is an arithmetic number, because the mean of its divisors is an integer number (3857094552).

Almost surely, 2^21214020003 is an apocalyptic number.

21214020003 is a deficient number, since it is larger than the sum of its proper divisors (9642736413).

21214020003 is a wasteful number, since it uses less digits than its factorization.

21214020003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 642849105.

The product of its (nonzero) digits is 96, while the sum is 15.

Adding to 21214020003 its reverse (30002041212), we get a palindrome (51216061215).

The spelling of 21214020003 in words is "twenty-one billion, two hundred fourteen million, twenty thousand, three".