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2222220112212 = 223269216878831
BaseRepresentation
bin100000010101100110101…
…000111111000101010100
321212102221100012012010110
4200111212220333011110
5242402101322042322
64420512425123020
7316356454202232
oct40254650770524
97772840165113
102222220112212
11787490358191
122ba821029470
131317291b2029
14797ada4b952
153cc1205dc0c
hex20566a3f154

2222220112212 has 24 divisors (see below), whose sum is σ = 5185373622912. Its totient is φ = 740712414400.

The previous prime is 2222220112207. The next prime is 2222220112213. The reversal of 2222220112212 is 2122110222222.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2222220112213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3116364 + ... + 3762467.

It is an arithmetic number, because the mean of its divisors is an integer number (216057234288).

Almost surely, 22222220112212 is an apocalyptic number.

It is an amenable number.

2222220112212 is an abundant number, since it is smaller than the sum of its proper divisors (2963153510700).

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

2222220112212 is a wasteful number, since it uses less digits than its factorization.

2222220112212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6905759 (or 6905757 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 21.

Adding to 2222220112212 its reverse (2122110222222), we get a palindrome (4344330334434).

The spelling of 2222220112212 in words is "two trillion, two hundred twenty-two billion, two hundred twenty million, one hundred twelve thousand, two hundred twelve".

Divisors: 1 2 3 4 6 12 26921 53842 80763 107684 161526 323052 6878831 13757662 20636493 27515324 41272986 82545972 185185009351 370370018702 555555028053 740740037404 1111110056106 2222220112212