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123020012333 = 211129582677
BaseRepresentation
bin111001010010010010…
…0000110101100101101
3102202112110212010121002
41302210210012230231
54003421110343313
6132303053450045
711613356565041
oct1624444065455
9382473763532
10123020012333
1148199654089
121ba131a0925
13b7a6a8780a
145d5047c021
15330019e058
hex1ca4906b2d

123020012333 has 4 divisors (see below), whose sum is σ = 123020806140. Its totient is φ = 123019218528.

The previous prime is 123020012299. The next prime is 123020012351. The reversal of 123020012333 is 333210020321.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 333210020321 = 727194582159.

It can be written as a sum of positive squares in 2 ways, for example, as 96334502884 + 26685509449 = 310378^2 + 163357^2 .

It is a cyclic number.

It is not a de Polignac number, because 123020012333 - 228 = 122751576877 is a prime.

It is a super-2 number, since 2×1230200123332 (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123020011333) 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, 80210 + ... + 502467.

It is an arithmetic number, because the mean of its divisors is an integer number (30755201535).

Almost surely, 2123020012333 is an apocalyptic number.

It is an amenable number.

123020012333 is a deficient number, since it is larger than the sum of its proper divisors (793807).

123020012333 is an equidigital number, since it uses as much as digits as its factorization.

123020012333 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 793806.

The product of its (nonzero) digits is 648, while the sum is 20.

Adding to 123020012333 its reverse (333210020321), we get a palindrome (456230032654).

The spelling of 123020012333 in words is "one hundred twenty-three billion, twenty million, twelve thousand, three hundred thirty-three".

Divisors: 1 211129 582677 123020012333