| Base | Representation |
|---|---|
| bin | 10100111001110010… |
| … | …10101111001110100 |
| 3 | 1001222002120110002100 |
| 4 | 22130321111321310 |
| 5 | 140440341242322 |
| 6 | 5053322542100 |
| 7 | 545045141601 |
| oct | 123471257164 |
| 9 | 31862513070 |
| 10 | 11222212212 |
| 11 | 4839712152 |
| 12 | 2212367930 |
| 13 | 109ac8ac73 |
| 14 | 7865d56a8 |
| 15 | 45a334dac |
| hex | 29ce55e74 |
11222212212 has 144 divisors (see below), whose sum is σ = 30661787520. Its totient is φ = 3449952000.
The previous prime is 11222212207. The next prime is 11222212219. The reversal of 11222212212 is 21221222211.
It is a happy number.
It is a Harshad number since it is a multiple of its sum of digits (18).
It is a nude number because it is divisible by every one of its digits.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (11222212219) 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 47 ways as a sum of consecutive naturals, for example, 4212793 + ... + 4215455.
It is an arithmetic number, because the mean of its divisors is an integer number (212929080).
Almost surely, 211222212212 is an apocalyptic number.
11222212212 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 11222212212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15330893760).
11222212212 is an abundant number, since it is smaller than the sum of its proper divisors (19439575308).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
11222212212 is a wasteful number, since it uses less digits than its factorization.
11222212212 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 2854 (or 2849 counting only the distinct ones).
The product of its digits is 128, while the sum is 18.
Adding to 11222212212 its reverse (21221222211), we get a palindrome (32443434423).
Subtracting 11222212212 from its reverse (21221222211), we obtain a palindrome (9999009999).
The spelling of 11222212212 in words is "eleven billion, two hundred twenty-two million, two hundred twelve thousand, two hundred twelve".
• e-mail: info -at- numbersaplenty.com • Privacy notice • done in 0.076 sec. • engine limits •