| Base | Representation |
|---|---|
| bin | 111000100110001101… |
| … | …1011011110011000100 |
| 3 | 102121201102111000121000 |
| 4 | 1301030123123303010 |
| 5 | 3442404041010302 |
| 6 | 131500232453300 |
| 7 | 11531623245003 |
| oct | 1611433336304 |
| 9 | 377642430530 |
| 10 | 121541344452 |
| 11 | 475aaa14010 |
| 12 | 1b67bb4a230 |
| 13 | b5cc6240c8 |
| 14 | 5c4dd2cc3a |
| 15 | 326546a31c |
| hex | 1c4c6dbcc4 |
121541344452 has 192 divisors, whose sum is σ = 350519742720. Its totient is φ = 36111744000.
The previous prime is 121541344451. The next prime is 121541344469. The reversal of 121541344452 is 254443145121.
121541344452 is a `hidden beast` number, since 1 + 2 + 154 + 13 + 44 + 452 = 666.
It is a super-2 number, since 2×1215413444522 (a number of 23 digits) contains 22 as substring.
It is a Harshad number since it is a multiple of its sum of digits (36).
It is not an unprimeable number, because it can be changed into a prime (121541344451) 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 63 ways as a sum of consecutive naturals, for example, 14999202 + ... + 15007302.
It is an arithmetic number, because the mean of its divisors is an integer number (1825623660).
Almost surely, 2121541344452 is an apocalyptic number.
121541344452 is a gapful number since it is divisible by the number (12) 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 121541344452, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (175259871360).
121541344452 is an abundant number, since it is smaller than the sum of its proper divisors (228978398268).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
121541344452 is a wasteful number, since it uses less digits than its factorization.
121541344452 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 8371 (or 8363 counting only the distinct ones).
The product of its digits is 76800, while the sum is 36.
Adding to 121541344452 its reverse (254443145121), we get a palindrome (375984489573).
The spelling of 121541344452 in words is "one hundred twenty-one billion, five hundred forty-one million, three hundred forty-four thousand, four hundred fifty-two".
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