Base | Representation |
---|---|
bin | 11011100011111111110111… |
… | …110110010101010000100010 |
3 | 120220012121122022201110110222 |
4 | 123203333313312111100202 |
5 | 111342041122133211320 |
6 | 1105452100133323042 |
7 | 34350633612550664 |
oct | 3343776766252042 |
9 | 526177568643428 |
10 | 121221020210210 |
11 | 35696600757358 |
12 | 11719542496482 |
13 | 528412988448b |
14 | 21d11b316c534 |
15 | e03384931825 |
hex | 6e3ff7d95422 |
121221020210210 has 64 divisors (see below), whose sum is σ = 222848077651200. Its totient is φ = 47459440953600.
The previous prime is 121221020210201. The next prime is 121221020210219. The reversal of 121221020210210 is 12012020122121.
It is an interprime number because it is at equal distance from previous prime (121221020210201) and next prime (121221020210219).
It is not an unprimeable number, because it can be changed into a prime (121221020210219) by changing a digit.
It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1866313235 + ... + 1866378185.
It is an arithmetic number, because the mean of its divisors is an integer number (3482001213300).
Almost surely, 2121221020210210 is an apocalyptic number.
121221020210210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.
121221020210210 is a deficient number, since it is larger than the sum of its proper divisors (101627057440990).
121221020210210 is a wasteful number, since it uses less digits than its factorization.
121221020210210 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 73403.
The product of its (nonzero) digits is 64, while the sum is 17.
Adding to 121221020210210 its reverse (12012020122121), we get a palindrome (133233040332331).
The spelling of 121221020210210 in words is "one hundred twenty-one trillion, two hundred twenty-one billion, twenty million, two hundred ten thousand, two hundred ten".
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