Base | Representation |
---|---|
bin | 11000100111111110… |
… | …01001000100100111 |
3 | 1021010100011211012002 |
4 | 30103333021010213 |
5 | 204033334034343 |
6 | 10023455115515 |
7 | 645416012006 |
oct | 142377110447 |
9 | 37110154162 |
10 | 13220221223 |
11 | 5674519970 |
12 | 268b512b9b |
13 | 1328bb9011 |
14 | 8d5ad2c3d |
15 | 5259528b8 |
hex | 313fc9127 |
13220221223 has 8 divisors (see below), whose sum is σ = 15181115520. Its totient is φ = 11385836280.
The previous prime is 13220221181. The next prime is 13220221253. The reversal of 13220221223 is 32212202231.
It is a happy number.
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 13220221223 - 28 = 13220220967 is a prime.
It is a junction number, because it is equal to n+sod(n) for n = 13220221195 and 13220221204.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (13220221253) 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, 31627115 + ... + 31627532.
It is an arithmetic number, because the mean of its divisors is an integer number (1897639440).
Almost surely, 213220221223 is an apocalyptic number.
13220221223 is a deficient number, since it is larger than the sum of its proper divisors (1960894297).
13220221223 is a wasteful number, since it uses less digits than its factorization.
13220221223 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 63254677.
The product of its (nonzero) digits is 576, while the sum is 20.
Adding to 13220221223 its reverse (32212202231), we get a palindrome (45432423454).
The spelling of 13220221223 in words is "thirteen billion, two hundred twenty million, two hundred twenty-one thousand, two hundred twenty-three".
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