Base | Representation |
---|---|
bin | 1110010101001… |
… | …00111011011101 |
3 | 22101012110112020 |
4 | 13022210323131 |
5 | 221233310323 |
6 | 15532330353 |
7 | 2656536561 |
oct | 712447335 |
9 | 271173466 |
10 | 120213213 |
11 | 61947a6a |
12 | 343139b9 |
13 | 1bb9cca3 |
14 | 11d736a1 |
15 | a848ae3 |
hex | 72a4edd |
120213213 has 4 divisors (see below), whose sum is σ = 160284288. Its totient is φ = 80142140.
The previous prime is 120213211. The next prime is 120213221. The reversal of 120213213 is 312312021.
It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.
It is a cyclic number.
It is not a de Polignac number, because 120213213 - 21 = 120213211 is a prime.
It is a junction number, because it is equal to n+sod(n) for n = 120213192 and 120213201.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (120213211) by changing a digit.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20035533 + ... + 20035538.
It is an arithmetic number, because the mean of its divisors is an integer number (40071072).
Almost surely, 2120213213 is an apocalyptic number.
It is an amenable number.
120213213 is a deficient number, since it is larger than the sum of its proper divisors (40071075).
120213213 is an equidigital number, since it uses as much as digits as its factorization.
120213213 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 40071074.
The product of its (nonzero) digits is 72, while the sum is 15.
The square root of 120213213 is about 10964.1786286069. The cubic root of 120213213 is about 493.5343689526.
Adding to 120213213 its reverse (312312021), we get a palindrome (432525234).
The spelling of 120213213 in words is "one hundred twenty million, two hundred thirteen thousand, two hundred thirteen".
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