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222002212 = 2272377669
BaseRepresentation
bin11010011101101…
…11110000100100
3120110201212210011
431032313300210
5423313032322
634010140004
75333662525
oct1516676044
9513655704
10222002212
11104350603
1262421604
1336cbbb73
14216ac84c
1514753677
hexd3b7c24

222002212 has 12 divisors (see below), whose sum is σ = 388608220. Its totient is φ = 110971296.

The previous prime is 222002189. The next prime is 222002219. The reversal of 222002212 is 212200222.

It can be written as a sum of positive squares in 2 ways, for example, as 184253476 + 37748736 = 13574^2 + 6144^2 .

It is a junction number, because it is equal to n+sod(n) for n = 222002192 and 222002201.

It is not an unprimeable number, because it can be changed into a prime (222002219) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25114 + ... + 32782.

Almost surely, 2222002212 is an apocalyptic number.

It is an amenable number.

222002212 is a deficient number, since it is larger than the sum of its proper divisors (166606008).

222002212 is a wasteful number, since it uses less digits than its factorization.

222002212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14910 (or 14908 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 13.

The square root of 222002212 is about 14899.7386554261. The cubic root of 222002212 is about 605.5069057207.

Adding to 222002212 its reverse (212200222), we get a palindrome (434202434).

The spelling of 222002212 in words is "two hundred twenty-two million, two thousand, two hundred twelve".

Divisors: 1 2 4 7237 7669 14474 15338 28948 30676 55500553 111001106 222002212