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12223142101 = 71172156931
BaseRepresentation
bin10110110001000111…
…00101100011010101
31011112211222221202201
423120203211203111
5200013111021401
65340520204501
7611620664542
oct133043454325
934484887681
1012223142101
115202710635
122451609731
1311ca462481
1483d505bc9
154b814bb01
hex2d88e58d5

12223142101 has 4 divisors (see below), whose sum is σ = 12395299104. Its totient is φ = 12050985100.

The previous prime is 12223142089. The next prime is 12223142143. The reversal of 12223142101 is 10124132221.

12223142101 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, and also an emirpimes, since its reverse is a distinct semiprime: 10124132221 = 71446304603.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-12223142101 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12223142801) 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, 86078395 + ... + 86078536.

It is an arithmetic number, because the mean of its divisors is an integer number (3098824776).

Almost surely, 212223142101 is an apocalyptic number.

It is an amenable number.

12223142101 is a deficient number, since it is larger than the sum of its proper divisors (172157003).

12223142101 is an equidigital number, since it uses as much as digits as its factorization.

12223142101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172157002.

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 12223142101 its reverse (10124132221), we get a palindrome (22347274322).

The spelling of 12223142101 in words is "twelve billion, two hundred twenty-three million, one hundred forty-two thousand, one hundred one".

Divisors: 1 71 172156931 12223142101