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12100101010100 = 2252121001010101
BaseRepresentation
bin1011000000010100011000…
…1110001111001010110100
31120211202110211210021211222
42300011012032033022310
53041222001324310400
641422413142045512
72356126532401055
oct260050616171264
946752424707758
1012100101010100
113945695631324
1214350b7419898
1369a05b1077cc
142db91021472c
1515eb40e5e185
hexb014638f2b4

12100101010100 has 18 divisors (see below), whose sum is σ = 26257219192134. Its totient is φ = 4840040404000.

The previous prime is 12100101010097. The next prime is 12100101010139. The reversal of 12100101010100 is 101010100121.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 1169261592976 + 10930839417124 = 1081324^2 + 3306182^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 60500504951 + ... + 60500505150.

It is an arithmetic number, because the mean of its divisors is an integer number (1458734399563).

Almost surely, 212100101010100 is an apocalyptic number.

12100101010100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12100101010100 is an abundant number, since it is smaller than the sum of its proper divisors (14157118182034).

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

12100101010100 is a wasteful number, since it uses less digits than its factorization.

12100101010100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121001010115 (or 121001010108 counting only the distinct ones).

The product of its (nonzero) digits is 2, while the sum is 8.

Adding to 12100101010100 its reverse (101010100121), we get a palindrome (12201111110221).

The spelling of 12100101010100 in words is "twelve trillion, one hundred billion, one hundred one million, ten thousand, one hundred".

Divisors: 1 2 4 5 10 20 25 50 100 121001010101 242002020202 484004040404 605005050505 1210010101010 2420020202020 3025025252525 6050050505050 12100101010100