Search a number
-
+
12200211121 = 76128571923
BaseRepresentation
bin10110101110011000…
…00111001010110001
31011111020211221101011
423113030013022301
5144441223223441
65334340510521
7611222040430
oct132714071261
934436757334
1012200211121
1151a077920a
1224459ab441
1311c5793c47
1483a457117
154b611c581
hex2d73072b1

12200211121 has 8 divisors (see below), whose sum is σ = 14171674304. Its totient is φ = 10285891920.

The previous prime is 12200211119. The next prime is 12200211137. The reversal of 12200211121 is 12111200221.

12200211121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 12200211121 - 21 = 12200211119 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12200212121) 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 7 ways as a sum of consecutive naturals, for example, 14285535 + ... + 14286388.

It is an arithmetic number, because the mean of its divisors is an integer number (1771459288).

Almost surely, 212200211121 is an apocalyptic number.

It is an amenable number.

12200211121 is a deficient number, since it is larger than the sum of its proper divisors (1971463183).

12200211121 is an equidigital number, since it uses as much as digits as its factorization.

12200211121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28571991.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 12200211121 its reverse (12111200221), we get a palindrome (24311411342).

The spelling of 12200211121 in words is "twelve billion, two hundred million, two hundred eleven thousand, one hundred twenty-one".

Divisors: 1 7 61 427 28571923 200003461 1742887303 12200211121