221000421230210 has 16 divisors (see below), whose sum is σ = 397999957428216. Its totient is φ = 88355902000128.

The previous prime is 221000421230203. The next prime is 221000421230257. The reversal of 221000421230210 is 12032124000122.

It can be written as a sum of positive squares in 4 ways, for example, as 116602440624121 + 104397980606089 = 10798261^2 + 10217533^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5533290527 + ... + 5533330466.

Almost surely, 2^{221000421230210} is an apocalyptic number.

221000421230210 is a deficient number, since it is larger than the sum of its proper divisors (176999536198006).

221000421230210 is a wasteful number, since it uses less digits than its factorization.

221000421230210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11066622997.

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 221000421230210 its reverse (12032124000122), we get a palindrome (233032545230332).

The spelling of 221000421230210 in words is "two hundred twenty-one trillion, four hundred twenty-one million, two hundred thirty thousand, two hundred ten".