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12200311420 = 2251125041451
BaseRepresentation
bin10110101110011000…
…11111101001111100
31011111021001000221221
423113030133221330
5144441234431140
65334343003124
7611222636023
oct132714375174
934437030857
1012200311420
1151a0837600
122445a394a4
1311c57ca7ab
1483a4818ba
154b613c14a
hex2d731fa7c

12200311420 has 36 divisors (see below), whose sum is σ = 28161550872. Its totient is φ = 4436476000.

The previous prime is 12200311393. The next prime is 12200311421. The reversal of 12200311420 is 2411300221.

It is a junction number, because it is equal to n+sod(n) for n = 12200311394 and 12200311403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12200311421) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2518306 + ... + 2523145.

It is an arithmetic number, because the mean of its divisors is an integer number (782265302).

Almost surely, 212200311420 is an apocalyptic number.

12200311420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12200311420 is an abundant number, since it is smaller than the sum of its proper divisors (15961239452).

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

12200311420 is a wasteful number, since it uses less digits than its factorization.

12200311420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5041482 (or 5041469 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 12200311420 its reverse (2411300221), we get a palindrome (14611611641).

The spelling of 12200311420 in words is "twelve billion, two hundred million, three hundred eleven thousand, four hundred twenty".

Divisors: 1 2 4 5 10 11 20 22 44 55 110 121 220 242 484 605 1210 2420 5041451 10082902 20165804 25207255 50414510 55455961 100829020 110911922 221823844 277279805 554559610 610015571 1109119220 1220031142 2440062284 3050077855 6100155710 12200311420