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1212210120982 = 27892358141257
BaseRepresentation
bin10001101000111101010…
…110101000100100010110
311021212221000012112010111
4101220331112220210112
5124330101242332412
62324514233513234
7153402461006260
oct21507526504426
94255830175114
101212210120982
11428106013773
12176b2687281a
138a40713b473
1442958000b30
15217ebb142a7
hex11a3d5a8916

1212210120982 has 32 divisors (see below), whose sum is σ = 2101563696960. Its totient is φ = 513647101440.

The previous prime is 1212210120973. The next prime is 1212210120983. The reversal of 1212210120982 is 2890210122121.

It is a super-2 number, since 2×12122101209822 (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1212210120983) 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 15 ways as a sum of consecutive naturals, for example, 29361298 + ... + 29402554.

It is an arithmetic number, because the mean of its divisors is an integer number (65673865530).

Almost surely, 21212210120982 is an apocalyptic number.

1212210120982 is a deficient number, since it is larger than the sum of its proper divisors (889353575978).

1212210120982 is a wasteful number, since it uses less digits than its factorization.

1212210120982 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64936.

The product of its (nonzero) digits is 2304, while the sum is 31.

The spelling of 1212210120982 in words is "one trillion, two hundred twelve billion, two hundred ten million, one hundred twenty thousand, nine hundred eighty-two".

Divisors: 1 2 7 14 89 178 623 1246 23581 41257 47162 82514 165067 288799 330134 577598 2098709 3671873 4197418 7343746 14690963 25703111 29381926 51406222 972881317 1945762634 6810169219 13620338438 86586437213 173172874426 606105060491 1212210120982