Base | Representation |
---|---|
bin | 1110011100101… |
… | …10010101011010 |
3 | 22110001200220100 |
4 | 13032112111122 |
5 | 222011431020 |
6 | 20005440230 |
7 | 3001125426 |
oct | 716262532 |
9 | 273050810 |
10 | 121202010 |
11 | 62462956 |
12 | 34710076 |
13 | 1c158087 |
14 | 1214db86 |
15 | a991a90 |
hex | 739655a |
121202010 has 96 divisors (see below), whose sum is σ = 342839952. Its totient is φ = 29583360.
The previous prime is 121201981. The next prime is 121202017. The reversal of 121202010 is 10202121.
It can be written as a sum of positive squares in 8 ways, for example, as 116575209 + 4626801 = 10797^2 + 2151^2 .
It is a Harshad number since it is a multiple of its sum of digits (9).
It is a junction number, because it is equal to n+sod(n) for n = 121201983 and 121202001.
It is not an unprimeable number, because it can be changed into a prime (121202017) by changing a digit.
It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 55540 + ... + 57680.
Almost surely, 2121202010 is an apocalyptic number.
121202010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.
It is a practical number, because each smaller number is the sum of distinct divisors of 121202010, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (171419976).
121202010 is an abundant number, since it is smaller than the sum of its proper divisors (221637942).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
121202010 is a wasteful number, since it uses less digits than its factorization.
121202010 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 2208 (or 2205 counting only the distinct ones).
The product of its (nonzero) digits is 8, while the sum is 9.
The square root of 121202010 is about 11009.1784434625. The cubic root of 121202010 is about 494.8838417370.
Adding to 121202010 its reverse (10202121), we get a palindrome (131404131).
The spelling of 121202010 in words is "one hundred twenty-one million, two hundred two thousand, ten".
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