Base | Representation |
---|---|
bin | 10011101010011000… |
… | …010110001011000000 |
3 | 2000111100011211002101 |
4 | 103222120112023000 |
5 | 321214200320000 |
6 | 13410534000144 |
7 | 1345115026156 |
oct | 235230261300 |
9 | 60440154071 |
10 | 21112120000 |
11 | 8a54272264 |
12 | 41124a6054 |
13 | 1cb5c100ca |
14 | 1043c9b3d6 |
15 | 8386e7e6a |
hex | 4ea6162c0 |
21112120000 has 70 divisors (see below), whose sum is σ = 52351295348. Its totient is φ = 8444832000.
The previous prime is 21112119989. The next prime is 21112120019. The reversal of 21112120000 is 2121112.
It is a super-2 number, since 2×211121200002 (a number of 21 digits) contains 22 as substring.
It is a Harshad number since it is a multiple of its sum of digits (10).
It is an unprimeable number.
It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 223902 + ... + 303901.
Almost surely, 221112120000 is an apocalyptic number.
21112120000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.
It is an amenable number.
21112120000 is an abundant number, since it is smaller than the sum of its proper divisors (31239175348).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
21112120000 is an frugal number, since it uses more digits than its factorization.
21112120000 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 527835 (or 527810 counting only the distinct ones).
The product of its (nonzero) digits is 8, while the sum is 10.
Adding to 21112120000 its reverse (2121112), we get a palindrome (21114241112).
The spelling of 21112120000 in words is "twenty-one billion, one hundred twelve million, one hundred twenty thousand".
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