21030332122 has 8 divisors (see below), whose sum is σ = 31555894356. Its totient is φ = 10511700672.

The previous prime is 21030332111. The next prime is 21030332129. The reversal of 21030332122 is 22123303012.

It can be written as a sum of positive squares in 2 ways, for example, as 20880539001 + 149793121 = 144501^2 + 12239^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 21030332122.

It is not an unprimeable number, because it can be changed into a prime (21030332129) 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 3 ways as a sum of consecutive naturals, for example, 1725103 + ... + 1737250.

Almost surely, 2^21030332122 is an apocalyptic number.

21030332122 is a deficient number, since it is larger than the sum of its proper divisors (10525562234).

21030332122 is a wasteful number, since it uses less digits than its factorization.

21030332122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3465392.

The product of its (nonzero) digits is 432, while the sum is 19.

Adding to 21030332122 its reverse (22123303012), we get a palindrome (43153635134).

The spelling of 21030332122 in words is "twenty-one billion, thirty million, three hundred thirty-two thousand, one hundred twenty-two".