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12101930101 = 103117494467
BaseRepresentation
bin10110100010101010…
…01100110001110101
31011020101220202011101
423101111030301311
5144241043230401
65320510210101
7605616465022
oct132125146165
934211822141
1012101930101
115150251228
122418ab3931
1311ab3029b1
1482b392549
154ac6a7101
hex2d154cc75

12101930101 has 4 divisors (see below), whose sum is σ = 12219424672. Its totient is φ = 11984435532.

The previous prime is 12101930021. The next prime is 12101930119. The reversal of 12101930101 is 10103910121.

12101930101 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: 10103910121 = 42192394859.

It is a cyclic number.

It is not a de Polignac number, because 12101930101 - 211 = 12101928053 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 (12101900101) 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, 58747131 + ... + 58747336.

It is an arithmetic number, because the mean of its divisors is an integer number (3054856168).

Almost surely, 212101930101 is an apocalyptic number.

It is an amenable number.

12101930101 is a deficient number, since it is larger than the sum of its proper divisors (117494571).

12101930101 is a wasteful number, since it uses less digits than its factorization.

12101930101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117494570.

The product of its (nonzero) digits is 54, while the sum is 19.

The spelling of 12101930101 in words is "twelve billion, one hundred one million, nine hundred thirty thousand, one hundred one".

Divisors: 1 103 117494467 12101930101