| Base | Representation |
|---|---|
| bin | 111000010111011001… |
| … | …1000011110010101100 |
| 3 | 102120102210001112120000 |
| 4 | 1300232303003302230 |
| 5 | 3440344310033400 |
| 6 | 131335033424300 |
| 7 | 11513405621535 |
| oct | 1605663036254 |
| 9 | 376383045500 |
| 10 | 121044221100 |
| 11 | 47375341970 |
| 12 | 1b56156b090 |
| 13 | b55063848a |
| 14 | 5c03cc568c |
| 15 | 32369be600 |
| hex | 1c2ecc3cac |
121044221100 has 720 divisors, whose sum is σ = 457010436960. Its totient is φ = 27388108800.
The previous prime is 121044221057. The next prime is 121044221107. The reversal of 121044221100 is 1122440121.
121044221100 is a `hidden beast` number, since 1 + 2 + 10 + 442 + 211 + 0 + 0 = 666.
It is a Harshad number since it is a multiple of its sum of digits (18).
It is not an unprimeable number, because it can be changed into a prime (121044221107) by changing a digit.
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 239 ways as a sum of consecutive naturals, for example, 237807646 + ... + 237808154.
It is an arithmetic number, because the mean of its divisors is an integer number (634736718).
Almost surely, 2121044221100 is an apocalyptic number.
121044221100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.
It is an amenable number.
It is a practical number, because each smaller number is the sum of distinct divisors of 121044221100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (228505218480).
121044221100 is an abundant number, since it is smaller than the sum of its proper divisors (335966215860).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
121044221100 is a wasteful number, since it uses less digits than its factorization.
121044221100 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 720 (or 704 counting only the distinct ones).
The product of its (nonzero) digits is 128, while the sum is 18.
Adding to 121044221100 its reverse (1122440121), we get a palindrome (122166661221).
It can be divided in two parts, 1210 and 44221100, that added together give a triangular number (44222310 = T9404).
The spelling of 121044221100 in words is "one hundred twenty-one billion, forty-four million, two hundred twenty-one thousand, one hundred".
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