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12200123203 = 31213909043
BaseRepresentation
bin10110101110010111…
…10001101101000011
31011111020200110202221
423113023301231003
5144441212420303
65334334551511
7611221223212
oct132713615503
934436613687
1012200123203
1151a0719154
122445968597
1311c5762c18
1483a433079
154b61014bd
hex2d72f1b43

12200123203 has 4 divisors (see below), whose sum is σ = 12204035368. Its totient is φ = 12196211040.

The previous prime is 12200123171. The next prime is 12200123213. The reversal of 12200123203 is 30232100221.

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 12200123203 - 25 = 12200123171 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12200123213) 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, 1951401 + ... + 1957642.

It is an arithmetic number, because the mean of its divisors is an integer number (3051008842).

Almost surely, 212200123203 is an apocalyptic number.

12200123203 is a deficient number, since it is larger than the sum of its proper divisors (3912165).

12200123203 is an equidigital number, since it uses as much as digits as its factorization.

12200123203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3912164.

The product of its (nonzero) digits is 144, while the sum is 16.

Adding to 12200123203 its reverse (30232100221), we get a palindrome (42432223424).

The spelling of 12200123203 in words is "twelve billion, two hundred million, one hundred twenty-three thousand, two hundred three".

Divisors: 1 3121 3909043 12200123203