21131002333 has 8 divisors (see below), whose sum is σ = 24201433152. Its totient is φ = 18073500576.

The previous prime is 21131002331. The next prime is 21131002349. The reversal of 21131002333 is 33320013112.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 21131002333 - 2¹ = 21131002331 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 21131002333.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21131002331) 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 7 ways as a sum of consecutive naturals, for example, 3228760 + ... + 3235297.

It is an arithmetic number, because the mean of its divisors is an integer number (3025179144).

Almost surely, 2^21131002333 is an apocalyptic number.

It is an amenable number.

21131002333 is a deficient number, since it is larger than the sum of its proper divisors (3070430819).

21131002333 is an equidigital number, since it uses as much as digits as its factorization.

21131002333 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6464531.

The product of its (nonzero) digits is 324, while the sum is 19.

Adding to 21131002333 its reverse (33320013112), we get a palindrome (54451015445).

The spelling of 21131002333 in words is "twenty-one billion, one hundred thirty-one million, two thousand, three hundred thirty-three".