21331033002 has 24 divisors (see below), whose sum is σ = 47200585536. Its totient is φ = 6959060136.

The previous prime is 21331033001. The next prime is 21331033007. The reversal of 21331033002 is 20033013312.

21331033002 is a `hidden beast` number, since 2 + 1 + 331 + 0 + 330 + 0 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (21331033001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12606148 + ... + 12607839.

It is an arithmetic number, because the mean of its divisors is an integer number (1966691064).

Almost surely, 2^21331033002 is an apocalyptic number.

21331033002 is an abundant number, since it is smaller than the sum of its proper divisors (25869552534).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21331033002 is a wasteful number, since it uses less digits than its factorization.

21331033002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25214042 (or 25214039 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 18.

Adding to 21331033002 its reverse (20033013312), we get a palindrome (41364046314).

The spelling of 21331033002 in words is "twenty-one billion, three hundred thirty-one million, thirty-three thousand, two".