221222323243210 has 32 divisors (see below), whose sum is σ = 398396746492560. Its totient is φ = 88445254668288.

The previous prime is 221222323243177. The next prime is 221222323243291. The reversal of 221222323243210 is 12342323222122.

It can be written as a sum of positive squares in 8 ways, for example, as 201129095636001 + 20093227607209 = 14181999^2 + 4482547^2 .

It is a super-2 number, since 2×221222323243210² (a number of 29 digits) contains 22 as substring.

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, 280761954 + ... + 281548786.

Almost surely, 2^{221222323243210} is an apocalyptic number.

221222323243210 is a deficient number, since it is larger than the sum of its proper divisors (177174423249350).

221222323243210 is a wasteful number, since it uses less digits than its factorization.

221222323243210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 800682.

The product of its (nonzero) digits is 27648, while the sum is 31.

Adding to 221222323243210 its reverse (12342323222122), we get a palindrome (233564646465332).

The spelling of 221222323243210 in words is "two hundred twenty-one trillion, two hundred twenty-two billion, three hundred twenty-three million, two hundred forty-three thousand, two hundred ten".