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330122213 = 536228721
BaseRepresentation
bin10011101011010…
…100001111100101
3212000011221112122
4103223110033211
51134002402323
652431355325
711115664301
oct2353241745
9760157478
10330122213
1115a388783
1292682b45
13535165b5
1431bb4d01
151deadec8
hex13ad43e5

330122213 has 4 divisors (see below), whose sum is σ = 336350988. Its totient is φ = 323893440.

The previous prime is 330122189. The next prime is 330122249. The reversal of 330122213 is 312221033.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 312221033 = 1571988669.

It can be written as a sum of positive squares in 2 ways, for example, as 108201604 + 221920609 = 10402^2 + 14897^2 .

It is a cyclic number.

It is not a de Polignac number, because 330122213 - 216 = 330056677 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 330122191 and 330122200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (330122263) 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, 3114308 + ... + 3114413.

It is an arithmetic number, because the mean of its divisors is an integer number (84087747).

Almost surely, 2330122213 is an apocalyptic number.

It is an amenable number.

330122213 is a deficient number, since it is larger than the sum of its proper divisors (6228775).

330122213 is an equidigital number, since it uses as much as digits as its factorization.

330122213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6228774.

The product of its (nonzero) digits is 216, while the sum is 17.

The square root of 330122213 is about 18169.2656153186. The cubic root of 330122213 is about 691.1276199020.

Adding to 330122213 its reverse (312221033), we get a palindrome (642343246).

The spelling of 330122213 in words is "three hundred thirty million, one hundred twenty-two thousand, two hundred thirteen".

Divisors: 1 53 6228721 330122213