| Base | Representation |
|---|---|
| bin | 100100000111111… |
| … | …1010101100100100 |
| 3 | 10010110211200200200 |
| 4 | 1020033322230210 |
| 5 | 4440301212012 |
| 6 | 320140110500 |
| 7 | 42015644631 |
| oct | 11017725444 |
| 9 | 3113750620 |
| 10 | 1212132132 |
| 11 | 5722428a2 |
| 12 | 299b35430 |
| 13 | 164181663 |
| 14 | b6dab188 |
| 15 | 716353dc |
| hex | 483fab24 |
1212132132 has 72 divisors (see below), whose sum is σ = 3234591360. Its totient is φ = 381672000.
The previous prime is 1212132121. The next prime is 1212132143. The reversal of 1212132132 is 2312312121.
It is an interprime number because it is at equal distance from previous prime (1212132121) and next prime (1212132143).
It is a Harshad number since it is a multiple of its sum of digits (18).
It is a nude number because it is divisible by every one of its digits.
It is an unprimeable number.
It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 252757 + ... + 257507.
It is an arithmetic number, because the mean of its divisors is an integer number (44924880).
Almost surely, 21212132132 is an apocalyptic number.
1212132132 is a gapful number since it is divisible by the number (12) formed by its first and last digit.
It is an amenable number.
It is a practical number, because each smaller number is the sum of distinct divisors of 1212132132, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1617295680).
1212132132 is an abundant number, since it is smaller than the sum of its proper divisors (2022459228).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
1212132132 is a wasteful number, since it uses less digits than its factorization.
1212132132 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 5153 (or 5148 counting only the distinct ones).
The product of its digits is 144, while the sum is 18.
The square root of 1212132132 is about 34815.6880156058. The cubic root of 1212132132 is about 1066.2277660886.
Adding to 1212132132 its reverse (2312312121), we get a palindrome (3524444253).
It can be divided in two parts, 12121 and 32132, that added together give a triangular number (44253 = T297).
The spelling of 1212132132 in words is "one billion, two hundred twelve million, one hundred thirty-two thousand, one hundred thirty-two".
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