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10000212101 = 112101818281
BaseRepresentation
bin10010101000000111…
…10010000010000101
3221210221011102001222
421110003302002011
5130440023241401
64332151130125
7502546254215
oct112403620205
927727142058
1010000212101
11427194a400
121b31073945
13c34a62b89
146ac1ba245
153d7e00c1b
hex2540f2085

10000212101 has 12 divisors (see below), whose sum is σ = 11100813612. Its totient is φ = 9001080000.

The previous prime is 10000212059. The next prime is 10000212143. The reversal of 10000212101 is 10121200001.

It is an interprime number because it is at equal distance from previous prime (10000212059) and next prime (10000212143).

It can be written as a sum of positive squares in 2 ways, for example, as 9603804001 + 396408100 = 97999^2 + 19910^2 .

It is a de Polignac number, because none of the positive numbers 2k-10000212101 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10000212161) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 396920 + ... + 421361.

It is an arithmetic number, because the mean of its divisors is an integer number (925067801).

Almost surely, 210000212101 is an apocalyptic number.

10000212101 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

10000212101 is a deficient number, since it is larger than the sum of its proper divisors (1100601511).

10000212101 is a wasteful number, since it uses less digits than its factorization.

10000212101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 818404 (or 818393 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 8.

Adding to 10000212101 its reverse (10121200001), we get a palindrome (20121412102).

The spelling of 10000212101 in words is "ten billion, two hundred twelve thousand, one hundred one".

Divisors: 1 11 101 121 1111 12221 818281 9001091 82646381 99012001 909110191 10000212101