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12201100001 = 31393583871
BaseRepresentation
bin10110101110011111…
…00000001011100001
31011111022112002200122
423113033200023201
5144441440200001
65334411530025
7611232432056
oct132717401341
934438462618
1012201100001
1151a1226022
122446159915
1311c5a156cc
1483a60902d
154b6245b1b
hex2d73e02e1

12201100001 has 4 divisors (see below), whose sum is σ = 12594683904. Its totient is φ = 11807516100.

The previous prime is 12201099991. The next prime is 12201100049. The reversal of 12201100001 is 10000110221.

12201100001 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-12201100001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12201100091) by changing a digit.

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, 196791905 + ... + 196791966.

It is an arithmetic number, because the mean of its divisors is an integer number (3148670976).

Almost surely, 212201100001 is an apocalyptic number.

It is an amenable number.

12201100001 is a deficient number, since it is larger than the sum of its proper divisors (393583903).

12201100001 is an equidigital number, since it uses as much as digits as its factorization.

12201100001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 393583902.

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

Adding to 12201100001 its reverse (10000110221), we get a palindrome (22201210222).

The spelling of 12201100001 in words is "twelve billion, two hundred one million, one hundred thousand, one".

Divisors: 1 31 393583871 12201100001