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12020100200220 = 22357178340150581
BaseRepresentation
bin1010111011101010010111…
…0011010111011100011100
31120120002222110011001220110
42232322211303113130130
53033414131122401340
641321542515050020
72350265200624230
oct256724563273434
946502873131813
1012020100200220
113914772221822
1214216ab2a0910
1369264ba7b198
142d7ac13085c0
1515ca0c880680
hexaeea5cd771c

12020100200220 has 384 divisors, whose sum is σ = 41321217595392. Its totient is φ = 2548260864000.

The previous prime is 12020100200191. The next prime is 12020100200221. The reversal of 12020100200220 is 2200200102021.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 12020100200196 and 12020100200205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12020100200221) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 237615330 + ... + 237665910.

It is an arithmetic number, because the mean of its divisors is an integer number (107607337488).

Almost surely, 212020100200220 is an apocalyptic number.

12020100200220 is a gapful number since it is divisible by the number (10) 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 12020100200220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20660608797696).

12020100200220 is an abundant number, since it is smaller than the sum of its proper divisors (29301117395172).

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

12020100200220 is a wasteful number, since it uses less digits than its factorization.

12020100200220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51101 (or 51099 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 12.

Adding to 12020100200220 its reverse (2200200102021), we get a palindrome (14220300302241).

The spelling of 12020100200220 in words is "twelve trillion, twenty billion, one hundred million, two hundred thousand, two hundred twenty".