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2100211210 = 25210021121
BaseRepresentation
bin111110100101110…
…1010111000001010
312102100220210011101
41331023222320022
513300123224320
6544222452014
7103021333516
oct17513527012
95370823141
102100211210
11988572849
124a743400a
13276163036
1415cd03146
15c45a9c0a
hex7d2eae0a

2100211210 has 8 divisors (see below), whose sum is σ = 3780380196. Its totient is φ = 840084480.

The previous prime is 2100211207. The next prime is 2100211249. The reversal of 2100211210 is 121120012.

It can be written as a sum of positive squares in 2 ways, for example, as 1915550289 + 184660921 = 43767^2 + 13589^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Harshad number since it is a multiple of its sum of digits (10), and also a Moran number because the ratio is a prime number: 210021121 = 2100211210 / (2 + 1 + 0 + 0 + 2 + 1 + 1 + 2 + 1 + 0).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 105010551 + ... + 105010570.

Almost surely, 22100211210 is an apocalyptic number.

2100211210 is a deficient number, since it is larger than the sum of its proper divisors (1680168986).

2100211210 is a wasteful number, since it uses less digits than its factorization.

2100211210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 210021128.

The product of its (nonzero) digits is 8, while the sum is 10.

The square root of 2100211210 is about 45828.0613816469. The cubic root of 2100211210 is about 1280.6220954729.

Adding to 2100211210 its reverse (121120012), we get a palindrome (2221331222).

The spelling of 2100211210 in words is "two billion, one hundred million, two hundred eleven thousand, two hundred ten".

Divisors: 1 2 5 10 210021121 420042242 1050105605 2100211210