Base | Representation |
---|---|
bin | 110111111111001000… |
… | …1111011110010110101 |
3 | 102111100001101120100201 |
4 | 1233332101323302311 |
5 | 3432212414344341 |
6 | 131122155040501 |
7 | 11454263050312 |
oct | 1577621736265 |
9 | 374301346321 |
10 | 120230231221 |
11 | 46a97916261 |
12 | 1b374a40131 |
13 | b450ac7969 |
14 | 5b67b57d09 |
15 | 31da2d2331 |
hex | 1bfe47bcb5 |
120230231221 has 8 divisors (see below), whose sum is σ = 122060144160. Its totient is φ = 118401360528.
The previous prime is 120230231203. The next prime is 120230231239. The reversal of 120230231221 is 122132032021.
It is an interprime number because it is at equal distance from previous prime (120230231203) and next prime (120230231239).
It is a sphenic number, since it is the product of 3 distinct primes.
It is a cyclic number.
It is not a de Polignac number, because 120230231221 - 211 = 120230229173 is a prime.
It is a Duffinian number.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (120230231291) by changing a digit.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26506 + ... + 491083.
It is an arithmetic number, because the mean of its divisors is an integer number (15257518020).
Almost surely, 2120230231221 is an apocalyptic number.
It is an amenable number.
120230231221 is a deficient number, since it is larger than the sum of its proper divisors (1829912939).
120230231221 is an equidigital number, since it uses as much as digits as its factorization.
120230231221 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 521123.
The product of its (nonzero) digits is 288, while the sum is 19.
Adding to 120230231221 its reverse (122132032021), we get a palindrome (242362263242).
The spelling of 120230231221 in words is "one hundred twenty billion, two hundred thirty million, two hundred thirty-one thousand, two hundred twenty-one".
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