221222202212 has 24 divisors (see below), whose sum is σ = 422359745472. Its totient is φ = 100549248800.

The previous prime is 221222202049. The next prime is 221222202217. The reversal of 221222202212 is 212202222122.

It is not an unprimeable number, because it can be changed into a prime (221222202217) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 593318 + ... + 891330.

It is an arithmetic number, because the mean of its divisors is an integer number (17598322728).

Almost surely, 2^221222202212 is an apocalyptic number.

221222202212 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

221222202212 is a deficient number, since it is larger than the sum of its proper divisors (201137543260).

221222202212 is a wasteful number, since it uses less digits than its factorization.

221222202212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 314899 (or 314897 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 20.

Adding to 221222202212 its reverse (212202222122), we get a palindrome (433424424334).

The spelling of 221222202212 in words is "two hundred twenty-one billion, two hundred twenty-two million, two hundred two thousand, two hundred twelve".