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121022100200 = 23524571324093
BaseRepresentation
bin111000010110101111…
…0101011001011101000
3102120101020102200101102
41300231132223023220
53440323124201300
6131332523340532
711513016610241
oct1605536531350
9376336380342
10121022100200
1147363903131
121b556081748
13b548b918a1
145c00da7cc8
153234aa00d5
hex1c2d7ab2e8

121022100200 has 48 divisors (see below), whose sum is σ = 281992299180. Its totient is φ = 48302876160.

The previous prime is 121022100193. The next prime is 121022100203. The reversal of 121022100200 is 2001220121.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 67765461124 + 53256639076 = 260318^2 + 230774^2 .

It is not an unprimeable number, because it can be changed into a prime (121022100203) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 570647 + ... + 753446.

Almost surely, 2121022100200 is an apocalyptic number.

121022100200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121022100200 is an abundant number, since it is smaller than the sum of its proper divisors (160970198980).

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

121022100200 is a wasteful number, since it uses less digits than its factorization.

121022100200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1324566 (or 1324557 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 121022100200 its reverse (2001220121), we get a palindrome (123023320321).

The spelling of 121022100200 in words is "one hundred twenty-one billion, twenty-two million, one hundred thousand, two hundred".

Divisors: 1 2 4 5 8 10 20 25 40 50 100 200 457 914 1828 2285 3656 4570 9140 11425 18280 22850 45700 91400 1324093 2648186 5296372 6620465 10592744 13240930 26481860 33102325 52963720 66204650 132409300 264818600 605110501 1210221002 2420442004 3025552505 4840884008 6051105010 12102210020 15127762525 24204420040 30255525050 60511050100 121022100200