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2100210212 = 223531487401
BaseRepresentation
bin111110100101110…
…1010101000100100
312102100220201210102
41331023222220210
513300123211322
6544222443232
7103021330562
oct17513525044
95370821712
102100210212
11988572021
124a7433518
13276162749
1415cd02a32
15c45a9792
hex7d2eaa24

2100210212 has 12 divisors (see below), whose sum is σ = 3685782156. Its totient is φ = 1047129600.

The previous prime is 2100210193. The next prime is 2100210251. The reversal of 2100210212 is 2120120012.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 747147556 + 1353062656 = 27334^2 + 36784^2 .

It is a junction number, because it is equal to n+sod(n) for n = 2100210193 and 2100210202.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 742289 + ... + 745112.

It is an arithmetic number, because the mean of its divisors is an integer number (307148513).

Almost surely, 22100210212 is an apocalyptic number.

It is an amenable number.

2100210212 is a deficient number, since it is larger than the sum of its proper divisors (1585571944).

2100210212 is a wasteful number, since it uses less digits than its factorization.

2100210212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1487758 (or 1487756 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

The square root of 2100210212 is about 45828.0504931205. The cubic root of 2100210212 is about 1280.6218926265.

Adding to 2100210212 its reverse (2120120012), we get a palindrome (4220330224).

The spelling of 2100210212 in words is "two billion, one hundred million, two hundred ten thousand, two hundred twelve".

Divisors: 1 2 4 353 706 1412 1487401 2974802 5949604 525052553 1050105106 2100210212