Base | Representation |
---|---|
bin | 111000010110011010… |
… | …1001011101010111110 |
3 | 102120100110222001222200 |
4 | 1300230311023222332 |
5 | 3440312333120410 |
6 | 131331454252330 |
7 | 11512525266042 |
oct | 1605465135276 |
9 | 376313861880 |
10 | 121011223230 |
11 | 473587540a7 |
12 | 1b5524b70a6 |
13 | b546853b01 |
14 | 5bdd776022 |
15 | 3233b523c0 |
hex | 1c2cd4babe |
121011223230 has 48 divisors (see below), whose sum is σ = 314649170784. Its totient is φ = 32267609280.
The previous prime is 121011223159. The next prime is 121011223241. The reversal of 121011223230 is 32322110121.
121011223230 is a `hidden beast` number, since 1 + 210 + 1 + 1 + 223 + 230 = 666.
It is a super-3 number, since 3×1210112232303 (a number of 34 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.
It is a Harshad number since it is a multiple of its sum of digits (18).
It is a congruent number.
It is an unprimeable number.
It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1840320 + ... + 1904940.
It is an arithmetic number, because the mean of its divisors is an integer number (6555191058).
Almost surely, 2121011223230 is an apocalyptic number.
121011223230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.
121011223230 is an abundant number, since it is smaller than the sum of its proper divisors (193637947554).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
121011223230 is a wasteful number, since it uses less digits than its factorization.
121011223230 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 85441 (or 85438 counting only the distinct ones).
The product of its (nonzero) digits is 144, while the sum is 18.
Adding to 121011223230 its reverse (32322110121), we get a palindrome (153333333351).
The spelling of 121011223230 in words is "one hundred twenty-one billion, eleven million, two hundred twenty-three thousand, two hundred thirty".
• e-mail: info -at- numbersaplenty.com • Privacy notice • done in 0.072 sec. • engine limits •