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12121132101 = 313310798259
BaseRepresentation
bin10110100100111100…
…11100110001000101
31011021202001022100120
423102132130301011
5144311002211401
65322433532153
7606241631361
oct132236346105
934252038316
1012121132101
115160076a51
122423414059
1311b2296b20
1482db502a1
154ae1eb836
hex2d279cc45

12121132101 has 8 divisors (see below), whose sum is σ = 17404702560. Its totient is φ = 7459158192.

The previous prime is 12121132097. The next prime is 12121132151. The reversal of 12121132101 is 10123112121.

12121132101 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 not a de Polignac number, because 12121132101 - 22 = 12121132097 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12121132151) 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, 155399091 + ... + 155399168.

It is an arithmetic number, because the mean of its divisors is an integer number (2175587820).

Almost surely, 212121132101 is an apocalyptic number.

It is an amenable number.

12121132101 is a deficient number, since it is larger than the sum of its proper divisors (5283570459).

12121132101 is a wasteful number, since it uses less digits than its factorization.

12121132101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 310798275.

The product of its (nonzero) digits is 24, while the sum is 15.

Adding to 12121132101 its reverse (10123112121), we get a palindrome (22244244222).

The spelling of 12121132101 in words is "twelve billion, one hundred twenty-one million, one hundred thirty-two thousand, one hundred one".

Divisors: 1 3 13 39 310798259 932394777 4040377367 12121132101