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1212012130223 = 19156539407503
BaseRepresentation
bin10001101000110001100…
…011010110111110101111
311021212102012122112212102
4101220301203112332233
5124324200101131343
62324442442125315
7153364535060606
oct21506143267657
94255365575772
101212012130223
11428014283344
12176a904b083b
138a3a510887b
14429399c2a3d
15217d95553b8
hex11a318d6faf

1212012130223 has 8 divisors (see below), whose sum is σ = 1275813523200. Its totient is φ = 1148211865368.

The previous prime is 1212012130171. The next prime is 1212012130243. The reversal of 1212012130223 is 3220312102121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1212012130223 - 218 = 1212011868079 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1212012130195 and 1212012130204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1212012130243) by changing a digit.

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 in 7 ways as a sum of consecutive naturals, for example, 2770490 + ... + 3177992.

It is an arithmetic number, because the mean of its divisors is an integer number (159476690400).

Almost surely, 21212012130223 is an apocalyptic number.

1212012130223 is a deficient number, since it is larger than the sum of its proper divisors (63801392977).

1212012130223 is a wasteful number, since it uses less digits than its factorization.

1212012130223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 564061.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 1212012130223 its reverse (3220312102121), we get a palindrome (4432324232344).

The spelling of 1212012130223 in words is "one trillion, two hundred twelve billion, twelve million, one hundred thirty thousand, two hundred twenty-three".

Divisors: 1 19 156539 407503 2974241 7742557 63790112117 1212012130223