| Base | Representation |
|---|---|
| bin | 10010110110100001… |
| … | …00011100011111010 |
| 3 | 222010100110010120200 |
| 4 | 21123100203203322 |
| 5 | 131211434014320 |
| 6 | 4352144103030 |
| 7 | 505544043105 |
| oct | 113320434372 |
| 9 | 28110403520 |
| 10 | 10121001210 |
| 11 | 4324050011 |
| 12 | 1b65604a76 |
| 13 | c53aa5018 |
| 14 | 6c025d73c |
| 15 | 3e3810290 |
| hex | 25b4238fa |
10121001210 has 96 divisors (see below), whose sum is σ = 27214866432. Its totient is φ = 2606929920.
The previous prime is 10121001199. The next prime is 10121001217. The reversal of 10121001210 is 1210012101.
It is a happy number.
10121001210 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.
It is a Harshad number since it is a multiple of its sum of digits (9).
It is a junction number, because it is equal to n+sod(n) for n = 10121001192 and 10121001201.
It is not an unprimeable number, because it can be changed into a prime (10121001217) 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 47 ways as a sum of consecutive naturals, for example, 1606687 + ... + 1612973.
It is an arithmetic number, because the mean of its divisors is an integer number (283488192).
Almost surely, 210121001210 is an apocalyptic number.
10121001210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.
It is a practical number, because each smaller number is the sum of distinct divisors of 10121001210, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13607433216).
10121001210 is an abundant number, since it is smaller than the sum of its proper divisors (17093865222).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
10121001210 is a wasteful number, since it uses less digits than its factorization.
10121001210 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 6908 (or 6905 counting only the distinct ones).
The product of its (nonzero) digits is 4, while the sum is 9.
Adding to 10121001210 its reverse (1210012101), we get a palindrome (11331013311).
The spelling of 10121001210 in words is "ten billion, one hundred twenty-one million, one thousand, two hundred ten".
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