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12101250145 = 511032194243
BaseRepresentation
bin10110100010100101…
…00110110001100001
31011020100122012102211
423101102212301201
5144240410001040
65320443442121
7605610633445
oct132122466141
934210565384
1012101250145
11514a927386
122418826341
1311ab12535a
1482b256825
154ac5c08ea
hex2d14a6c61

12101250145 has 8 divisors (see below), whose sum is σ = 14534672256. Its totient is φ = 9672218736.

The previous prime is 12101250143. The next prime is 12101250169. The reversal of 12101250145 is 54105210121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12101250145 - 21 = 12101250143 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12101250143) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1091607 + ... + 1102636.

It is an arithmetic number, because the mean of its divisors is an integer number (1816834032).

Almost surely, 212101250145 is an apocalyptic number.

It is an amenable number.

12101250145 is a deficient number, since it is larger than the sum of its proper divisors (2433422111).

12101250145 is a wasteful number, since it uses less digits than its factorization.

12101250145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2195351.

The product of its (nonzero) digits is 400, while the sum is 22.

Adding to 12101250145 its reverse (54105210121), we get a palindrome (66206460266).

The spelling of 12101250145 in words is "twelve billion, one hundred one million, two hundred fifty thousand, one hundred forty-five".

Divisors: 1 5 1103 5515 2194243 10971215 2420250029 12101250145