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201100000000 = 28582011
BaseRepresentation
bin1011101101001001111…
…1100111101100000000
3201020002000010110211011
42323102133213230000
511243323100000000
6232214542530304
720346305540044
oct2732237475400
9636060113734
10201100000000
1178316786509
1232b83b96994
1315c6b19cb53
149a3a220024
15536ed0a2ba
hex2ed27e7b00

201100000000 has 162 divisors, whose sum is σ = 502017321092. Its totient is φ = 80400000000.

The previous prime is 201099999983. The next prime is 201100000001. The reversal of 201100000000 is 1102.

It is a Harshad number since it is a multiple of its sum of digits (4).

It is not an unprimeable number, because it can be changed into a prime (201100000001) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 99998995 + ... + 100001005.

Almost surely, 2201100000000 is an apocalyptic number.

201100000000 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 201100000000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (251008660546).

201100000000 is an abundant number, since it is smaller than the sum of its proper divisors (300917321092).

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

201100000000 is an frugal number, since it uses more digits than its factorization.

201100000000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2067 (or 2018 counting only the distinct ones).

The product of its (nonzero) digits is 2, while the sum is 4.

Adding to 201100000000 its reverse (1102), we get a palindrome (201100001102).

The spelling of 201100000000 in words is "two hundred one billion, one hundred million", and thus it is an aban number.