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12002145101 = 31387165971
BaseRepresentation
bin10110010110110001…
…00011001101001101
31010222110011010212122
423023120203031031
5144040022120401
65302543342325
7603265356452
oct131330431515
933873133778
1012002145101
1150a9997291
1223ab5b19a5
13119373600b
1481c019829
154a3a4621b
hex2cb62334d

12002145101 has 4 divisors (see below), whose sum is σ = 12389311104. Its totient is φ = 11614979100.

The previous prime is 12002145047. The next prime is 12002145161. The reversal of 12002145101 is 10154120021.

12002145101 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: 10154120021 = 27736657473.

It is a cyclic number.

It is not a de Polignac number, because 12002145101 - 214 = 12002128717 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12002145101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12002145161) 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, 193582955 + ... + 193583016.

It is an arithmetic number, because the mean of its divisors is an integer number (3097327776).

Almost surely, 212002145101 is an apocalyptic number.

It is an amenable number.

12002145101 is a deficient number, since it is larger than the sum of its proper divisors (387166003).

12002145101 is an equidigital number, since it uses as much as digits as its factorization.

12002145101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 387166002.

The product of its (nonzero) digits is 80, while the sum is 17.

Adding to 12002145101 its reverse (10154120021), we get a palindrome (22156265122).

The spelling of 12002145101 in words is "twelve billion, two million, one hundred forty-five thousand, one hundred one".

Divisors: 1 31 387165971 12002145101