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2101001100 = 22352111722203
BaseRepresentation
bin111110100111010…
…1011101110001100
312102102101220200120
41331032223232030
513300324013400
6544251424540
7103031133432
oct17516535614
95372356616
102101001100
11988a62250
124a7755150
1327637b723
1415d06ad52
15c46b3ca0
hex7d3abb8c

2101001100 has 216 divisors, whose sum is σ = 7047757248. Its totient is φ = 479155200.

The previous prime is 2101001093. The next prime is 2101001131. The reversal of 2101001100 is 11001012.

It is a Harshad number since it is a multiple of its sum of digits (6).

It is a super Niven number, because it is divisible the sum of any subset of its (nonzero) digits.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 952599 + ... + 954801.

Almost surely, 22101001100 is an apocalyptic number.

2101001100 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 2101001100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3523878624).

2101001100 is an abundant number, since it is smaller than the sum of its proper divisors (4946756148).

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

2101001100 is a wasteful number, since it uses less digits than its factorization.

2101001100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2265 (or 2241 counting only the distinct ones).

The product of its (nonzero) digits is 2, while the sum is 6.

The square root of 2101001100 is about 45836.6785445892. The cubic root of 2101001100 is about 1280.7826227878.

Adding to 2101001100 its reverse (11001012), we get a palindrome (2112002112).

The spelling of 2101001100 in words is "two billion, one hundred one million, one thousand, one hundred".