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12102100211 = 54122369871
BaseRepresentation
bin10110100010101011…
…10110010011110011
31011020102020101111202
423101111312103303
5144241114201321
65320514001415
7605621103665
oct132125662363
934212211452
1012102100211
115150358013
122418b7626b
1311ab362256
1482b3d8535
154ac6dc70b
hex2d15764f3

12102100211 has 4 divisors (see below), whose sum is σ = 12124470624. Its totient is φ = 12079729800.

The previous prime is 12102100163. The next prime is 12102100247. The reversal of 12102100211 is 11200120121.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12102100211 - 26 = 12102100147 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12102100192 and 12102100201.

It is not an unprimeable number, because it can be changed into a prime (12102100291) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 11184395 + ... + 11185476.

It is an arithmetic number, because the mean of its divisors is an integer number (3031117656).

Almost surely, 212102100211 is an apocalyptic number.

12102100211 is a deficient number, since it is larger than the sum of its proper divisors (22370413).

12102100211 is an equidigital number, since it uses as much as digits as its factorization.

12102100211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22370412.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 12102100211 its reverse (11200120121), we get a palindrome (23302220332).

The spelling of 12102100211 in words is "twelve billion, one hundred two million, one hundred thousand, two hundred eleven".

Divisors: 1 541 22369871 12102100211