21030321122 has 8 divisors (see below), whose sum is σ = 31549932972. Its totient is φ = 10513676800.

The previous prime is 21030321113. The next prime is 21030321161. The reversal of 21030321122 is 22112303012.

It can be written as a sum of positive squares in 2 ways, for example, as 20810659081 + 219662041 = 144259^2 + 14821^2 .

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 21030321122.

It is an unprimeable number.

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, 724079 + ... + 752562.

Almost surely, 2^21030321122 is an apocalyptic number.

21030321122 is a deficient number, since it is larger than the sum of its proper divisors (10519611850).

21030321122 is a wasteful number, since it uses less digits than its factorization.

21030321122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1483764.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 21030321122 its reverse (22112303012), we get a palindrome (43142624134).

The spelling of 21030321122 in words is "twenty-one billion, thirty million, three hundred twenty-one thousand, one hundred twenty-two".