Base | Representation |
---|---|
bin | 111110111100010… |
… | …1001010010111111 |
3 | 12110012002210000020 |
4 | 1331320221102333 |
5 | 13311133014330 |
6 | 545323303223 |
7 | 103223466642 |
oct | 17570512277 |
9 | 5405083006 |
10 | 2112001215 |
11 | 994195855 |
12 | 4ab37ab13 |
13 | 27873057c |
14 | 1606d1a59 |
15 | c5638210 |
hex | 7de294bf |
2112001215 has 16 divisors (see below), whose sum is σ = 3397875936. Its totient is φ = 1120176000.
The previous prime is 2112001211. The next prime is 2112001217. The reversal of 2112001215 is 5121002112.
It is not a de Polignac number, because 2112001215 - 22 = 2112001211 is a prime.
It is a super-2 number, since 2×21120012152 = 8921098264322952450, which contains 22 as substring.
It is a Harshad number since it is a multiple of its sum of digits (15).
It is a junction number, because it is equal to n+sod(n) for n = 2112001194 and 2112001203.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (2112001211) by changing a digit.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 386236 + ... + 391665.
It is an arithmetic number, because the mean of its divisors is an integer number (212367246).
Almost surely, 22112001215 is an apocalyptic number.
2112001215 is a deficient number, since it is larger than the sum of its proper divisors (1285874721).
2112001215 is a wasteful number, since it uses less digits than its factorization.
2112001215 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 778090.
The product of its (nonzero) digits is 40, while the sum is 15.
The square root of 2112001215 is about 45956.5143913243. The cubic root of 2112001215 is about 1283.0139780307.
Adding to 2112001215 its reverse (5121002112), we get a palindrome (7233003327).
The spelling of 2112001215 in words is "two billion, one hundred twelve million, one thousand, two hundred fifteen".
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