21230002000203 has 16 divisors (see below), whose sum is σ = 28496903141376. Its totient is φ = 14058436676960.

The previous prime is 21230002000177. The next prime is 21230002000217. The reversal of 21230002000203 is 30200020003212.

It is a cyclic number.

It is not a de Polignac number, because 21230002000203 - 2¹⁰ = 21230001999179 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21230002000253) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26975901 + ... + 27751742.

It is an arithmetic number, because the mean of its divisors is an integer number (1781056446336).

Almost surely, 2^{21230002000203} is an apocalyptic number.

21230002000203 is a deficient number, since it is larger than the sum of its proper divisors (7266901141173).

21230002000203 is a wasteful number, since it uses less digits than its factorization.

21230002000203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54728514.

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

Adding to 21230002000203 its reverse (30200020003212), we get a palindrome (51430022003415).

The spelling of 21230002000203 in words is "twenty-one trillion, two hundred thirty billion, two million, two hundred three", and thus it is an aban number.