Base | Representation |
---|---|
bin | 10001101000111101111… |
… | …100110010001110011100 |
3 | 11021212221201000121222000 |
4 | 101220331330302032130 |
5 | 124330111322401022 |
6 | 2324515232122300 |
7 | 153402642011634 |
oct | 21507574621634 |
9 | 4255851017860 |
10 | 1212220122012 |
11 | 428110724689 |
12 | 176b2a096390 |
13 | 8a409230633 |
14 | 429594856c4 |
15 | 217ec93c6ac |
hex | 11a3df3239c |
1212220122012 has 24 divisors (see below), whose sum is σ = 3142792909200. Its totient is φ = 404073373968.
The previous prime is 1212220121933. The next prime is 1212220122019. The reversal of 1212220122012 is 2102210222121.
It is a happy number.
1212220122012 is a `hidden beast` number, since 1 + 212 + 220 + 1 + 220 + 12 = 666.
It is a Harshad number since it is a multiple of its sum of digits (18).
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (1212220122019) by changing a digit.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5612130087 + ... + 5612130302.
It is an arithmetic number, because the mean of its divisors is an integer number (130949704550).
Almost surely, 21212220122012 is an apocalyptic number.
1212220122012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.
It is an amenable number.
1212220122012 is an abundant number, since it is smaller than the sum of its proper divisors (1930572787188).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
1212220122012 is a wasteful number, since it uses less digits than its factorization.
1212220122012 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 11224260402 (or 11224260394 counting only the distinct ones).
The product of its (nonzero) digits is 128, while the sum is 18.
Adding to 1212220122012 its reverse (2102210222121), we get a palindrome (3314430344133).
The spelling of 1212220122012 in words is "one trillion, two hundred twelve billion, two hundred twenty million, one hundred twenty-two thousand, twelve".
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