221102220222212 has 24 divisors (see below), whose sum is σ = 442205217785856. Its totient is φ = 94757927807808.

The previous prime is 221102220222211. The next prime is 221102220222227. The reversal of 221102220222212 is 212222022201122.

It is not an unprimeable number, because it can be changed into a prime (221102220222211) 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, 9997373 + ... + 23284155.

It is an arithmetic number, because the mean of its divisors is an integer number (18425217407744).

Almost surely, 2^{221102220222212} is an apocalyptic number.

It is an amenable number.

221102220222212 is an abundant number, since it is smaller than the sum of its proper divisors (221102997563644).

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

221102220222212 is a wasteful number, since it uses less digits than its factorization.

221102220222212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13881107 (or 13881105 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 23.

Adding to 221102220222212 its reverse (212222022201122), we get a palindrome (433324242423334).

The spelling of 221102220222212 in words is "two hundred twenty-one trillion, one hundred two billion, two hundred twenty million, two hundred twenty-two thousand, two hundred twelve".