21141621030730 has 32 divisors (see below), whose sum is σ = 38404692651600. Its totient is φ = 8378923295232.

The previous prime is 21141621030701. The next prime is 21141621030743. The reversal of 21141621030730 is 3703012614112.

It can be written as a sum of positive squares in 8 ways, for example, as 12657933724401 + 8483687306329 = 3557799^2 + 2912677^2 .

It is a junction number, because it is equal to n+sod(n) for n = 21141621030692 and 21141621030701.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 84818164 + ... + 85067056.

Almost surely, 2^{21141621030730} is an apocalyptic number.

21141621030730 is a deficient number, since it is larger than the sum of its proper divisors (17263071620870).

21141621030730 is a wasteful number, since it uses less digits than its factorization.

21141621030730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 326938.

The product of its (nonzero) digits is 6048, while the sum is 31.

Adding to 21141621030730 its reverse (3703012614112), we get a palindrome (24844633644842).

The spelling of 21141621030730 in words is "twenty-one trillion, one hundred forty-one billion, six hundred twenty-one million, thirty thousand, seven hundred thirty".