| Base | Representation |
|---|---|
| bin | 10001110000001101110… |
| … | …010101110001001111000 |
| 3 | 11022122001001012200111212 |
| 4 | 101300031302232021320 |
| 5 | 124442031020041440 |
| 6 | 2332243343142252 |
| 7 | 154066534564511 |
| oct | 21601562561170 |
| 9 | 4278031180455 |
| 10 | 1220002112120 |
| 11 | 430444428a70 |
| 12 | 1785402a4988 |
| 13 | 8b079551acc |
| 14 | 43096bdda08 |
| 15 | 21b05c22465 |
| hex | 11c0dcae278 |
1220002112120 has 128 divisors (see below), whose sum is σ = 3168002880000. Its totient is φ = 418175239680.
The previous prime is 1220002112059. The next prime is 1220002112129. The reversal of 1220002112120 is 212112000221.
It is a super-2 number, since 2×12200021121202 (a number of 25 digits) contains 22 as substring.
It is a junction number, because it is equal to n+sod(n) for n = 1220002112095 and 1220002112104.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (1220002112129) 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 31 ways as a sum of consecutive naturals, for example, 1296974 + ... + 2030306.
It is an arithmetic number, because the mean of its divisors is an integer number (24750022500).
Almost surely, 21220002112120 is an apocalyptic number.
1220002112120 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 1220002112120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1584001440000).
1220002112120 is an abundant number, since it is smaller than the sum of its proper divisors (1948000767880).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
1220002112120 is a wasteful number, since it uses less digits than its factorization.
1220002112120 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 733573 (or 733569 counting only the distinct ones).
The product of its (nonzero) digits is 32, while the sum is 14.
Adding to 1220002112120 its reverse (212112000221), we get a palindrome (1432114112341).
The spelling of 1220002112120 in words is "one trillion, two hundred twenty billion, two million, one hundred twelve thousand, one hundred twenty".
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