Base | Representation |
---|---|
bin | 1100010101110011111… |
… | …0010000010101010010 |
3 | 202021020120021112221000 |
4 | 3011130332100111102 |
5 | 11433200341034302 |
6 | 241221511042430 |
7 | 21213612434346 |
oct | 3053476202522 |
9 | 667216245830 |
10 | 212013221202 |
11 | 81a06a33092 |
12 | 3510a970416 |
13 | 16cba1327a3 |
14 | a393781626 |
15 | 57ace5731c |
hex | 315cf90552 |
212013221202 has 32 divisors (see below), whose sum is σ = 471166761600. Its totient is φ = 70667133264.
The previous prime is 212013221179. The next prime is 212013221209. The reversal of 212013221202 is 202122310212.
212013221202 is a `hidden beast` number, since 21 + 201 + 322 + 120 + 2 = 666.
It is a Harshad number since it is a multiple of its sum of digits (18).
It is not an unprimeable number, because it can be changed into a prime (212013221209) 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, 964683 + ... + 1163889.
It is an arithmetic number, because the mean of its divisors is an integer number (14723961300).
Almost surely, 2212013221202 is an apocalyptic number.
212013221202 is an abundant number, since it is smaller than the sum of its proper divisors (259153540398).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
212013221202 is a wasteful number, since it uses less digits than its factorization.
212013221202 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 218927 (or 218921 counting only the distinct ones).
The product of its (nonzero) digits is 192, while the sum is 18.
Adding to 212013221202 its reverse (202122310212), we get a palindrome (414135531414).
The spelling of 212013221202 in words is "two hundred twelve billion, thirteen million, two hundred twenty-one thousand, two hundred two".
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