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220212012021012 = 22321143179269419641
BaseRepresentation
bin110010000100100000011010…
…110000000111010100010100
31001212201001200202010010210200
4302010200122300013110110
5212330423200034133022
62100204000213020500
764245535641645024
oct6204403260072424
91055631622103720
10220212012021012
1164191431963780
1220846691324730
1395b4b9937500b
143c544653cda84
151a6d346be1bac
hexc8481ac07514

220212012021012 has 576 divisors, whose sum is σ = 629645208192000. Its totient is φ = 64319341363200.

The previous prime is 220212012020989. The next prime is 220212012021047. The reversal of 220212012021012 is 210120210212022.

It is a happy number.

220212012021012 is a `hidden beast` number, since 2 + 202 + 120 + 120 + 210 + 12 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 343544480212 + ... + 343544480852.

It is an arithmetic number, because the mean of its divisors is an integer number (1093134042000).

Almost surely, 2220212012021012 is an apocalyptic number.

220212012021012 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 220212012021012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (314822604096000).

220212012021012 is an abundant number, since it is smaller than the sum of its proper divisors (409433196170988).

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

220212012021012 is a wasteful number, since it uses less digits than its factorization.

220212012021012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1572 (or 1567 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 220212012021012 its reverse (210120210212022), we get a palindrome (430332222233034).

The spelling of 220212012021012 in words is "two hundred twenty trillion, two hundred twelve billion, twelve million, twenty-one thousand, twelve".