| Base | Representation |
|---|---|
| bin | 100000110010011… |
| … | …1110010000010100 |
| 3 | 2211200020112001201 |
| 4 | 1001210332100110 |
| 5 | 4223123224340 |
| 6 | 301101202244 |
| 7 | 36156432613 |
| oct | 10144762024 |
| 9 | 2750215051 |
| 10 | 1100211220 |
| 11 | 515049a79 |
| 12 | 268560384 |
| 13 | 146c25b74 |
| 14 | a619587a |
| 15 | 668c879a |
| hex | 4193e414 |
1100211220 has 48 divisors (see below), whose sum is σ = 2376009216. Its totient is φ = 427680000.
The previous prime is 1100211163. The next prime is 1100211241. The reversal of 1100211220 is 221120011.
It is a super-2 number, since 2×11002112202 = 2420929457227776800, which contains 22 as substring.
It is a Harshad number since it is a multiple of its sum of digits (10).
It is a junction number, because it is equal to n+sod(n) for n = 1100211197 and 1100211206.
It is a congruent number.
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, 219745 + ... + 224695.
It is an arithmetic number, because the mean of its divisors is an integer number (49500192).
Almost surely, 21100211220 is an apocalyptic number.
1100211220 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 1100211220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1188004608).
1100211220 is an abundant number, since it is smaller than the sum of its proper divisors (1275797996).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
1100211220 is a wasteful number, since it uses less digits than its factorization.
1100211220 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 5272 (or 5270 counting only the distinct ones).
The product of its (nonzero) digits is 8, while the sum is 10.
The square root of 1100211220 is about 33169.4320120197. The cubic root of 1100211220 is about 1032.3461834114.
Adding to 1100211220 its reverse (221120011), we get a palindrome (1321331231).
It can be divided in two parts, 11002 and 11220, that added together give a palindrome (22222).
The spelling of 1100211220 in words is "one billion, one hundred million, two hundred eleven thousand, two hundred twenty".
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