| Base | Representation |
|---|---|
| bin | 11101000111110010001… |
| … | …000111100000100101000 |
| 3 | 21002022111121200011112000 |
| 4 | 131013302020330010220 |
| 5 | 230242000342101440 |
| 6 | 4131203201251000 |
| 7 | 264404103135612 |
| oct | 35076210740450 |
| 9 | 7068447604460 |
| 10 | 2001222222120 |
| 11 | 701793855410 |
| 12 | 283a25333a60 |
| 13 | 116939839524 |
| 14 | 6cc06d25db2 |
| 15 | 370ca457730 |
| hex | 1d1f223c128 |
2001222222120 has 256 divisors, whose sum is σ = 7300889164800. Its totient is φ = 483563623680.
The previous prime is 2001222222119. The next prime is 2001222222127. The reversal of 2001222222120 is 212222221002.
2001222222120 is a `hidden beast` number, since 200 + 1 + 2 + 222 + 221 + 20 = 666.
It is a Harshad number since it is a multiple of its sum of digits (18).
It is a junction number, because it is equal to n+sod(n) for n = 2001222222093 and 2001222222102.
It is not an unprimeable number, because it can be changed into a prime (2001222222127) by changing a digit.
It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3372807 + ... + 3921513.
It is an arithmetic number, because the mean of its divisors is an integer number (28519098300).
Almost surely, 22001222222120 is an apocalyptic number.
2001222222120 is a gapful number since it is divisible by the number (20) 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 2001222222120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3650444582400).
2001222222120 is an abundant number, since it is smaller than the sum of its proper divisors (5299666942680).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
2001222222120 is a wasteful number, since it uses less digits than its factorization.
2001222222120 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 549045 (or 549035 counting only the distinct ones).
The product of its (nonzero) digits is 256, while the sum is 18.
Adding to 2001222222120 its reverse (212222221002), we get a palindrome (2213444443122).
It can be divided in two parts, 200122 and 2222120, that added together give a palindrome (2422242).
The spelling of 2001222222120 in words is "two trillion, one billion, two hundred twenty-two million, two hundred twenty-two thousand, one hundred twenty".
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