222100212212 has 6 divisors (see below), whose sum is σ = 388675371378. Its totient is φ = 111050106104.

The previous prime is 222100212211. The next prime is 222100212221. The reversal of 222100212212 is 212212001222.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 176220285796 + 45879926416 = 419786^2 + 214196^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222100212211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27762526523 + ... + 27762526530.

It is an arithmetic number, because the mean of its divisors is an integer number (64779228563).

Almost surely, 2^222100212212 is an apocalyptic number.

It is an amenable number.

222100212212 is a deficient number, since it is larger than the sum of its proper divisors (166575159166).

222100212212 is a wasteful number, since it uses less digits than its factorization.

222100212212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55525053057 (or 55525053055 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 222100212212 its reverse (212212001222), we get a palindrome (434312213434).

The spelling of 222100212212 in words is "two hundred twenty-two billion, one hundred million, two hundred twelve thousand, two hundred twelve".