21133210203 has 32 divisors (see below), whose sum is σ = 35882572800. Its totient is φ = 12041872128.

The previous prime is 21133210141. The next prime is 21133210207. The reversal of 21133210203 is 30201233112.

It is not a de Polignac number, because 21133210203 - 2⁸ = 21133209947 is a prime.

It is a super-2 number, since 2×21133210203² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (21133210207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 91663 + ... + 225096.

It is an arithmetic number, because the mean of its divisors is an integer number (1121330400).

Almost surely, 2^21133210203 is an apocalyptic number.

21133210203 is a deficient number, since it is larger than the sum of its proper divisors (14749362597).

21133210203 is a wasteful number, since it uses less digits than its factorization.

21133210203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 317128 (or 317122 counting only the distinct ones).

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

Adding to 21133210203 its reverse (30201233112), we get a palindrome (51334443315).

The spelling of 21133210203 in words is "twenty-one billion, one hundred thirty-three million, two hundred ten thousand, two hundred three".