21032112203 has 16 divisors (see below), whose sum is σ = 22644679680. Its totient is φ = 19486553856.

The previous prime is 21032112133. The next prime is 21032112209. The reversal of 21032112203 is 30221123012.

It is not a de Polignac number, because 21032112203 - 2¹⁰ = 21032111179 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21032112209) 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, 4568 + ... + 205146.

It is an arithmetic number, because the mean of its divisors is an integer number (1415292480).

Almost surely, 2^21032112203 is an apocalyptic number.

21032112203 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

21032112203 is a deficient number, since it is larger than the sum of its proper divisors (1612567477).

21032112203 is a wasteful number, since it uses less digits than its factorization.

21032112203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 200746.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 21032112203 its reverse (30221123012), we get a palindrome (51253235215).

The spelling of 21032112203 in words is "twenty-one billion, thirty-two million, one hundred twelve thousand, two hundred three".