221202020212230 has 64 divisors (see below), whose sum is σ = 539627559840000. Its totient is φ = 58015935246720.

The previous prime is 221202020212177. The next prime is 221202020212237. The reversal of 221202020212230 is 32212020202122.

It is a junction number, because it is equal to n+sod(n) for n = 221202020212197 and 221202020212206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221202020212237) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 20485021 + ... + 29360519.

It is an arithmetic number, because the mean of its divisors is an integer number (8431680622500).

Almost surely, 2^{221202020212230} is an apocalyptic number.

221202020212230 is an abundant number, since it is smaller than the sum of its proper divisors (318425539627770).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

221202020212230 is a wasteful number, since it uses less digits than its factorization.

221202020212230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8889189.

The product of its (nonzero) digits is 768, while the sum is 21.

Adding to 221202020212230 its reverse (32212020202122), we get a palindrome (253414040414352).

The spelling of 221202020212230 in words is "two hundred twenty-one trillion, two hundred two billion, twenty million, two hundred twelve thousand, two hundred thirty".