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12100000210 = 251210000021
BaseRepresentation
bin10110100010011011…
…10101100111010010
31011020021021200211221
423101031311213102
5144240100001320
65320400555254
7605564206354
oct132115654722
934207250757
1012100000210
11514a153281
122418322b2a
1311aaaa844c
1482b00d0d4
154ac4253aa
hex2d13759d2

12100000210 has 8 divisors (see below), whose sum is σ = 21780000396. Its totient is φ = 4840000080.

The previous prime is 12100000201. The next prime is 12100000249. The reversal of 12100000210 is 1200000121.

It can be written as a sum of positive squares in 2 ways, for example, as 10687217641 + 1412782569 = 103379^2 + 37587^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 12100000193 and 12100000202.

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, 605000001 + ... + 605000020.

Almost surely, 212100000210 is an apocalyptic number.

12100000210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12100000210 is a deficient number, since it is larger than the sum of its proper divisors (9680000186).

12100000210 is a wasteful number, since it uses less digits than its factorization.

12100000210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1210000028.

The product of its (nonzero) digits is 4, while the sum is 7.

Adding to 12100000210 its reverse (1200000121), we get a palindrome (13300000331).

The spelling of 12100000210 in words is "twelve billion, one hundred million, two hundred ten", and thus it is an aban number.

Divisors: 1 2 5 10 1210000021 2420000042 6050000105 12100000210