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12123113300 = 2252121231133
BaseRepresentation
bin10110100101001100…
…00000011101010100
31011021212202222001022
423102212000131110
5144312004111200
65322544220312
7606264522434
oct132246003524
934255688038
1012123113300
1151611aa501
12242400a698
1311b280b82c
148301082c4
154ae48d885
hex2d2980754

12123113300 has 18 divisors (see below), whose sum is σ = 26307156078. Its totient is φ = 4849245280.

The previous prime is 12123113291. The next prime is 12123113329. The reversal of 12123113300 is 331132121.

It can be written as a sum of positive squares in 3 ways, for example, as 152127556 + 11970985744 = 12334^2 + 109412^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 60615467 + ... + 60615666.

It is an arithmetic number, because the mean of its divisors is an integer number (1461508671).

Almost surely, 212123113300 is an apocalyptic number.

12123113300 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12123113300 is an abundant number, since it is smaller than the sum of its proper divisors (14184042778).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12123113300 is a wasteful number, since it uses less digits than its factorization.

12123113300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121231147 (or 121231140 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 12123113300 its reverse (331132121), we get a palindrome (12454245421).

The spelling of 12123113300 in words is "twelve billion, one hundred twenty-three million, one hundred thirteen thousand, three hundred".

Divisors: 1 2 4 5 10 20 25 50 100 121231133 242462266 484924532 606155665 1212311330 2424622660 3030778325 6061556650 12123113300