212221102 has 16 divisors (see below), whose sum is σ = 329443200. Its totient is φ = 102424320.

The previous prime is 212221067. The next prime is 212221153. The reversal of 212221102 is 201122212.

It is a happy number.

It is a super-2 number, since 2×212221102² = 90075592268188808, which contains 22 as substring.

It is a congruent number.

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, 21174 + ... + 29542.

It is an arithmetic number, because the mean of its divisors is an integer number (20590200).

Almost surely, 2^212221102 is an apocalyptic number.

212221102 is a deficient number, since it is larger than the sum of its proper divisors (117222098).

212221102 is a wasteful number, since it uses less digits than its factorization.

212221102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8811.

The product of its (nonzero) digits is 32, while the sum is 13.

The square root of 212221102 is about 14567.8104737809. The cubic root of 212221102 is about 596.4804149413.

Adding to 212221102 its reverse (201122212), we get a palindrome (413343314).

The spelling of 212221102 in words is "two hundred twelve million, two hundred twenty-one thousand, one hundred two".