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12103310101 = 66611817041
BaseRepresentation
bin10110100010110100…
…11101101100010101
31011020111111212011111
423101122131230111
5144241421410401
65320555535021
7605634303241
oct132132355425
934214455144
1012103310101
115151004023
12241945a471
1311ab696b6c
1482b631421
154ac87ae51
hex2d169db15

12103310101 has 4 divisors (see below), whose sum is σ = 12105133804. Its totient is φ = 12101486400.

The previous prime is 12103310071. The next prime is 12103310117. The reversal of 12103310101 is 10101330121.

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

It can be written as a sum of positive squares in 2 ways, for example, as 9461452900 + 2641857201 = 97270^2 + 51399^2 .

It is a cyclic number.

It is not a de Polignac number, because 12103310101 - 25 = 12103310069 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 (12103310801) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 901860 + ... + 915181.

It is an arithmetic number, because the mean of its divisors is an integer number (3026283451).

Almost surely, 212103310101 is an apocalyptic number.

It is an amenable number.

12103310101 is a deficient number, since it is larger than the sum of its proper divisors (1823703).

12103310101 is an equidigital number, since it uses as much as digits as its factorization.

12103310101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1823702.

The product of its (nonzero) digits is 18, while the sum is 13.

Adding to 12103310101 its reverse (10101330121), we get a palindrome (22204640222).

The spelling of 12103310101 in words is "twelve billion, one hundred three million, three hundred ten thousand, one hundred one".

Divisors: 1 6661 1817041 12103310101