21130320002 has 16 divisors (see below), whose sum is σ = 34659424800. Its totient is φ = 9581763840.

The previous prime is 21130319953. The next prime is 21130320007. The reversal of 21130320002 is 20002303112.

It is a happy number.

It is a super-3 number, since 3×21130320002³ (a number of 32 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (21130320007) 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, 1136927 + ... + 1155362.

It is an arithmetic number, because the mean of its divisors is an integer number (2166214050).

Almost surely, 2^21130320002 is an apocalyptic number.

21130320002 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

21130320002 is a deficient number, since it is larger than the sum of its proper divisors (13529104798).

21130320002 is a wasteful number, since it uses less digits than its factorization.

21130320002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2292721.

The product of its (nonzero) digits is 72, while the sum is 14.

Adding to 21130320002 its reverse (20002303112), we get a palindrome (41132623114).

The spelling of 21130320002 in words is "twenty-one billion, one hundred thirty million, three hundred twenty thousand, two".