221102221210 has 16 divisors (see below), whose sum is σ = 428598152136. Its totient is φ = 81637743168.

The previous prime is 221102221201. The next prime is 221102221231. The reversal of 221102221210 is 12122201122.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 85449228489 + 135652992721 = 292317^2 + 368311^2 .

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, 850393029 + ... + 850393288.

Almost surely, 2^221102221210 is an apocalyptic number.

221102221210 is a deficient number, since it is larger than the sum of its proper divisors (207495930926).

221102221210 is a wasteful number, since it uses less digits than its factorization.

221102221210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1700786337.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 221102221210 its reverse (12122201122), we get a palindrome (233224422332).

The spelling of 221102221210 in words is "two hundred twenty-one billion, one hundred two million, two hundred twenty-one thousand, two hundred ten".