222211002212 has 6 divisors (see below), whose sum is σ = 388869253878. Its totient is φ = 111105501104.

The previous prime is 222211002193. The next prime is 222211002239. The reversal of 222211002212 is 212200112222.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 217926514276 + 4284487936 = 466826^2 + 65456^2 .

It is a super-2 number, since 2×222211002212² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27776375273 + ... + 27776375280.

It is an arithmetic number, because the mean of its divisors is an integer number (64811542313).

Almost surely, 2^222211002212 is an apocalyptic number.

It is an amenable number.

222211002212 is a deficient number, since it is larger than the sum of its proper divisors (166658251666).

222211002212 is a wasteful number, since it uses less digits than its factorization.

222211002212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55552750557 (or 55552750555 counting only the distinct ones).

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

Adding to 222211002212 its reverse (212200112222), we get a palindrome (434411114434).

The spelling of 222211002212 in words is "two hundred twenty-two billion, two hundred eleven million, two thousand, two hundred twelve".