21213313130 has 16 divisors (see below), whose sum is σ = 38189530080. Its totient is φ = 8484088272.

The previous prime is 21213313127. The next prime is 21213313139. The reversal of 21213313130 is 3131331212.

It is not an unprimeable number, because it can be changed into a prime (21213313139) 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, 80924 + ... + 221303.

It is an arithmetic number, because the mean of its divisors is an integer number (2386845630).

Almost surely, 2^21213313130 is an apocalyptic number.

21213313130 is a deficient number, since it is larger than the sum of its proper divisors (16976216950).

21213313130 is a wasteful number, since it uses less digits than its factorization.

21213313130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 309253.

The product of its (nonzero) digits is 324, while the sum is 20.

Adding to 21213313130 its reverse (3131331212), we get a palindrome (24344644342).

The spelling of 21213313130 in words is "twenty-one billion, two hundred thirteen million, three hundred thirteen thousand, one hundred thirty".