21030002223 has 8 divisors (see below), whose sum is σ = 28051039488. Its totient is φ = 14014483224.

The previous prime is 21030002209. The next prime is 21030002251. The reversal of 21030002223 is 32220003012.

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

It is not a de Polignac number, because 21030002223 - 2⁶ = 21030002159 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21030003223) 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, 1370665 + ... + 1385922.

It is an arithmetic number, because the mean of its divisors is an integer number (3506379936).

Almost surely, 2^21030002223 is an apocalyptic number.

21030002223 is a deficient number, since it is larger than the sum of its proper divisors (7021037265).

21030002223 is a wasteful number, since it uses less digits than its factorization.

21030002223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2759133.

The product of its (nonzero) digits is 144, while the sum is 15.

Adding to 21030002223 its reverse (32220003012), we get a palindrome (53250005235).

The spelling of 21030002223 in words is "twenty-one billion, thirty million, two thousand, two hundred twenty-three".