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201020201200 = 245271343128431
BaseRepresentation
bin1011101100110110111…
…1001101100011110000
3201012212102222021110001
42323031233031203300
511243142132414300
6232203012315344
720344316342350
oct2731557154360
9635772867401
10201020201200
1178285732495
1232b61312b54
1315c577b0220
149a2d7aab60
155367ce616a
hex2ecdbcd8f0

201020201200 has 240 divisors, whose sum is σ = 608229293056. Its totient is φ = 62139571200.

The previous prime is 201020201171. The next prime is 201020201209. The reversal of 201020201200 is 2102020102.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201020201209) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1500985 + ... + 1629415.

Almost surely, 2201020201200 is an apocalyptic number.

201020201200 is a gapful number since it is divisible by the number (20) 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 201020201200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (304114646528).

201020201200 is an abundant number, since it is smaller than the sum of its proper divisors (407209091856).

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

201020201200 is a wasteful number, since it uses less digits than its factorization.

201020201200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128512 (or 128501 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 10.

Adding to 201020201200 its reverse (2102020102), we get a palindrome (203122221302).

The spelling of 201020201200 in words is "two hundred one billion, twenty million, two hundred one thousand, two hundred".