21301032203 has 4 divisors (see below), whose sum is σ = 23237489688. Its totient is φ = 19364574720.

The previous prime is 21301032167. The next prime is 21301032223. The reversal of 21301032203 is 30223010312.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 21301032203 - 2³⁴ = 4121163019 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21301032223) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 968228726 + ... + 968228747.

It is an arithmetic number, because the mean of its divisors is an integer number (5809372422).

Almost surely, 2^21301032203 is an apocalyptic number.

21301032203 is a deficient number, since it is larger than the sum of its proper divisors (1936457485).

21301032203 is a wasteful number, since it uses less digits than its factorization.

21301032203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1936457484.

The product of its (nonzero) digits is 216, while the sum is 17.

Adding to 21301032203 its reverse (30223010312), we get a palindrome (51524042515).

The spelling of 21301032203 in words is "twenty-one billion, three hundred one million, thirty-two thousand, two hundred three".