222120112100212 has 6 divisors (see below), whose sum is σ = 388710196175378. Its totient is φ = 111060056050104.

The previous prime is 222120112100203. The next prime is 222120112100267. The reversal of 222120112100212 is 212001211021222.

It can be written as a sum of positive squares in only one way, i.e., 200962264845456 + 21157847254756 = 14176116^2 + 4599766^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 222120112100212.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27765014012523 + ... + 27765014012530.

Almost surely, 2^{222120112100212} is an apocalyptic number.

It is an amenable number.

222120112100212 is a deficient number, since it is larger than the sum of its proper divisors (166590084075166).

222120112100212 is a wasteful number, since it uses less digits than its factorization.

222120112100212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55530028025057 (or 55530028025055 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 222120112100212 its reverse (212001211021222), we get a palindrome (434121323121434).

The spelling of 222120112100212 in words is "two hundred twenty-two trillion, one hundred twenty billion, one hundred twelve million, one hundred thousand, two hundred twelve".