Base | Representation |
---|---|
bin | 11000011100000001… |
… | …10111111110110100 |
3 | 1020212100121200021020 |
4 | 30032000313332310 |
5 | 203332210342322 |
6 | 10005515221140 |
7 | 643061156316 |
oct | 141600677664 |
9 | 36770550236 |
10 | 13120012212 |
11 | 56229a53aa |
12 | 2661a477b0 |
13 | 1311201348 |
14 | 8c66897b6 |
15 | 51bc5b05c |
hex | 30e037fb4 |
13120012212 has 48 divisors (see below), whose sum is σ = 31287658752. Its totient is φ = 4277146240.
The previous prime is 13120012201. The next prime is 13120012223. The reversal of 13120012212 is 21221002131.
It is an interprime number because it is at equal distance from previous prime (13120012201) and next prime (13120012223).
It is a junction number, because it is equal to n+sod(n) for n = 13120012191 and 13120012200.
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, 834262 + ... + 849842.
It is an arithmetic number, because the mean of its divisors is an integer number (651826224).
Almost surely, 213120012212 is an apocalyptic number.
13120012212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.
It is an amenable number.
13120012212 is an abundant number, since it is smaller than the sum of its proper divisors (18167646540).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
13120012212 is a wasteful number, since it uses less digits than its factorization.
13120012212 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 17128 (or 17126 counting only the distinct ones).
The product of its (nonzero) digits is 48, while the sum is 15.
Adding to 13120012212 its reverse (21221002131), we get a palindrome (34341014343).
The spelling of 13120012212 in words is "thirteen billion, one hundred twenty million, twelve thousand, two hundred twelve".
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