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12203213331220 = 225610160666561
BaseRepresentation
bin1011000110010100100000…
…1100100001101100010100
31121012121121220210221001021
42301211020030201230110
53044414140103044340
641542025005010524
72366440000562062
oct261451014415424
947177556727037
1012203213331220
11398539887433a
121451093553a44
136a69b1667482
143028d2759032
15162678527e4a
hexb1948321b14

12203213331220 has 12 divisors (see below), whose sum is σ = 25626747995604. Its totient is φ = 4881285332480.

The previous prime is 12203213331193. The next prime is 12203213331227. The reversal of 12203213331220 is 2213331230221.

It can be written as a sum of positive squares in 2 ways, for example, as 9285635050756 + 2917578280464 = 3047234^2 + 1708092^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12203213331227) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 305080333261 + ... + 305080333300.

It is an arithmetic number, because the mean of its divisors is an integer number (2135562332967).

Almost surely, 212203213331220 is an apocalyptic number.

12203213331220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12203213331220 is an abundant number, since it is smaller than the sum of its proper divisors (13423534664384).

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

12203213331220 is a wasteful number, since it uses less digits than its factorization.

12203213331220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 610160666570 (or 610160666568 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 25.

Adding to 12203213331220 its reverse (2213331230221), we get a palindrome (14416544561441).

The spelling of 12203213331220 in words is "twelve trillion, two hundred three billion, two hundred thirteen million, three hundred thirty-one thousand, two hundred twenty".

Divisors: 1 2 4 5 10 20 610160666561 1220321333122 2440642666244 3050803332805 6101606665610 12203213331220