Base | Representation |
---|---|
bin | 1100000100010… |
… | …00001101011100 |
3 | 21001110120101210 |
4 | 12002020031130 |
5 | 201403034322 |
6 | 14013304420 |
7 | 2336236401 |
oct | 602101534 |
9 | 231416353 |
10 | 101221212 |
11 | 52155aa4 |
12 | 29a95110 |
13 | 17c80611 |
14 | d62c2a8 |
15 | 8d4670c |
hex | 608835c |
101221212 has 24 divisors (see below), whose sum is σ = 236742912. Its totient is φ = 33660400.
The previous prime is 101221201. The next prime is 101221259. The reversal of 101221212 is 212122101.
It is a Harshad number since it is a multiple of its sum of digits (12).
It is a congruent number.
It is an unprimeable number.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4614 + ... + 14957.
It is an arithmetic number, because the mean of its divisors is an integer number (9864288).
Almost surely, 2101221212 is an apocalyptic number.
101221212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.
It is an amenable number.
101221212 is an abundant number, since it is smaller than the sum of its proper divisors (135521700).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
101221212 is a wasteful number, since it uses less digits than its factorization.
101221212 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 20009 (or 20007 counting only the distinct ones).
The product of its (nonzero) digits is 16, while the sum is 12.
The square root of 101221212 is about 10060.8753098326. The cubic root of 101221212 is about 466.0406983679.
Adding to 101221212 its reverse (212122101), we get a palindrome (313343313).
The spelling of 101221212 in words is "one hundred one million, two hundred twenty-one thousand, two hundred twelve".
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