21231333130 has 16 divisors (see below), whose sum is σ = 43675885440. Its totient is φ = 7279314192.

The previous prime is 21231333121. The next prime is 21231333163. The reversal of 21231333130 is 3133313212.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 151652310 + ... + 151652449.

It is an arithmetic number, because the mean of its divisors is an integer number (2729742840).

Almost surely, 2^21231333130 is an apocalyptic number.

21231333130 is an abundant number, since it is smaller than the sum of its proper divisors (22444552310).

21231333130 is a wasteful number, since it uses less digits than its factorization.

21231333130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 303304773.

The product of its (nonzero) digits is 972, while the sum is 22.

Adding to 21231333130 its reverse (3133313212), we get a palindrome (24364646342).

The spelling of 21231333130 in words is "twenty-one billion, two hundred thirty-one million, three hundred thirty-three thousand, one hundred thirty".