21110332203 has 24 divisors (see below), whose sum is σ = 31329811968. Its totient is φ = 13687512192.

The previous prime is 21110332193. The next prime is 21110332279. The reversal of 21110332203 is 30223301112.

21110332203 is a `hidden beast` number, since 21 + 110 + 332 + 203 = 666.

It is not a de Polignac number, because 21110332203 - 2⁵ = 21110332171 is a prime.

It is a super-2 number, since 2×21110332203² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (21110333203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 882975 + ... + 906567.

It is an arithmetic number, because the mean of its divisors is an integer number (1305408832).

Almost surely, 2^21110332203 is an apocalyptic number.

21110332203 is a deficient number, since it is larger than the sum of its proper divisors (10219479765).

21110332203 is a wasteful number, since it uses less digits than its factorization.

21110332203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26323 (or 26320 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 21110332203 its reverse (30223301112), we get a palindrome (51333633315).

The spelling of 21110332203 in words is "twenty-one billion, one hundred ten million, three hundred thirty-two thousand, two hundred three".