Base | Representation |
---|---|
bin | 1110011011001… |
… | …01010010100000 |
3 | 22102200111022222 |
4 | 13031211102200 |
5 | 221434013440 |
6 | 20001250212 |
7 | 2666330642 |
oct | 715452240 |
9 | 272614288 |
10 | 121001120 |
11 | 62335a29 |
12 | 34633968 |
13 | 1c0b77c6 |
14 | 120da892 |
15 | a9522b5 |
hex | 73654a0 |
121001120 has 96 divisors (see below), whose sum is σ = 306996480. Its totient is φ = 44928000.
The previous prime is 121001113. The next prime is 121001141. The reversal of 121001120 is 21100121.
It is a Harshad number since it is a multiple of its sum of digits (8).
It is a junction number, because it is equal to n+sod(n) for n = 121001098 and 121001107.
It is an unprimeable number.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 160745 + ... + 161495.
It is an arithmetic number, because the mean of its divisors is an integer number (3197880).
Almost surely, 2121001120 is an apocalyptic number.
121001120 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 121001120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (153498240).
121001120 is an abundant number, since it is smaller than the sum of its proper divisors (185995360).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
121001120 is a wasteful number, since it uses less digits than its factorization.
121001120 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 838 (or 830 counting only the distinct ones).
The product of its (nonzero) digits is 4, while the sum is 8.
The square root of 121001120 is about 11000.0509089731. The cubic root of 121001120 is about 494.6102703857.
Adding to 121001120 its reverse (21100121), we get a palindrome (142101241).
Subtracting from 121001120 its reverse (21100121), we obtain a palindrome (99900999).
It can be divided in two parts, 121001 and 120, that added together give a palindrome (121121).
The spelling of 121001120 in words is "one hundred twenty-one million, one thousand, one hundred twenty".
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