21133031003 has 24 divisors (see below), whose sum is σ = 25693365600. Its totient is φ = 17308988928.

The previous prime is 21133030999. The next prime is 21133031057. The reversal of 21133031003 is 30013033112.

It is not a de Polignac number, because 21133031003 - 2² = 21133030999 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21133031063) 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 23 ways as a sum of consecutive naturals, for example, 61178 + ... + 214496.

It is an arithmetic number, because the mean of its divisors is an integer number (1070556900).

Almost surely, 2^21133031003 is an apocalyptic number.

21133031003 is a deficient number, since it is larger than the sum of its proper divisors (4560334597).

21133031003 is a wasteful number, since it uses less digits than its factorization.

21133031003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153459 (or 153452 counting only the distinct ones).

The product of its (nonzero) digits is 162, while the sum is 17.

Adding to 21133031003 its reverse (30013033112), we get a palindrome (51146064115).

The spelling of 21133031003 in words is "twenty-one billion, one hundred thirty-three million, thirty-one thousand, three".