21331302130 has 8 divisors (see below), whose sum is σ = 38396343852. Its totient is φ = 8532520848.

The previous prime is 21331302119. The next prime is 21331302169. The reversal of 21331302130 is 3120313312.

It can be written as a sum of positive squares in 2 ways, for example, as 20834324281 + 496977849 = 144341^2 + 22293^2 .

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

It is a super-2 number, since 2×21331302130² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21331302098 and 21331302107.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1066565097 + ... + 1066565116.

Almost surely, 2^21331302130 is an apocalyptic number.

21331302130 is a deficient number, since it is larger than the sum of its proper divisors (17065041722).

21331302130 is a wasteful number, since it uses less digits than its factorization.

21331302130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2133130220.

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

Adding to 21331302130 its reverse (3120313312), we get a palindrome (24451615442).

The spelling of 21331302130 in words is "twenty-one billion, three hundred thirty-one million, three hundred two thousand, one hundred thirty".