21301000203 has 16 divisors (see below), whose sum is σ = 32518681856. Its totient is φ = 12149494560.

The previous prime is 21301000183. The next prime is 21301000207. The reversal of 21301000203 is 30200010312.

It is a happy number.

It is not a de Polignac number, because 21301000203 - 2²⁴ = 21284222987 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21301000207) 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, 926101 + ... + 948822.

It is an arithmetic number, because the mean of its divisors is an integer number (2032417616).

Almost surely, 2^21301000203 is an apocalyptic number.

21301000203 is a deficient number, since it is larger than the sum of its proper divisors (11217681653).

21301000203 is a wasteful number, since it uses less digits than its factorization.

21301000203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1875474.

The product of its (nonzero) digits is 36, while the sum is 12.

Adding to 21301000203 its reverse (30200010312), we get a palindrome (51501010515).

The spelling of 21301000203 in words is "twenty-one billion, three hundred one million, two hundred three", and thus it is an aban number.