| Base | Representation |
|---|---|
| bin | 10001100111000110010… |
| … | …000110010011110100000 |
| 3 | 11021200202202120112121101 |
| 4 | 101213012100302132200 |
| 5 | 124312003244200000 |
| 6 | 2323544101204144 |
| 7 | 153302120056231 |
| oct | 21470620623640 |
| 9 | 4250682515541 |
| 10 | 1210212100000 |
| 11 | 4272801a8a62 |
| 12 | 176669700654 |
| 13 | 8a179207b27 |
| 14 | 428088dd088 |
| 15 | 217314e2e6a |
| hex | 119c64327a0 |
1210212100000 has 144 divisors (see below), whose sum is σ = 3074140242432. Its totient is φ = 468468000000.
The previous prime is 1210212099989. The next prime is 1210212100001. The reversal of 1210212100000 is 12120121.
It is a super-2 number, since 2×12102121000002 (a number of 25 digits) contains 22 as substring.
It is a Harshad number since it is a multiple of its sum of digits (10).
It is a self number, because there is not a number n which added to its sum of digits gives 1210212100000.
It is not an unprimeable number, because it can be changed into a prime (1210212100001) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (17) of ones.
It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2904805 + ... + 3295195.
It is an arithmetic number, because the mean of its divisors is an integer number (21348196128).
Almost surely, 21210212100000 is an apocalyptic number.
1210212100000 is a gapful number since it is divisible by the number (10) 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 1210212100000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1537070121216).
1210212100000 is an abundant number, since it is smaller than the sum of its proper divisors (1863928142432).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
1210212100000 is an frugal number, since it uses more digits than its factorization.
1210212100000 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 390457 (or 390429 counting only the distinct ones).
The product of its (nonzero) digits is 8, while the sum is 10.
Adding to 1210212100000 its reverse (12120121), we get a palindrome (1210224220121).
The spelling of 1210212100000 in words is "one trillion, two hundred ten billion, two hundred twelve million, one hundred thousand".
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