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220212213 = 3139758211
BaseRepresentation
bin11010010000000…
…10101111110101
3120100100221100220
431020002233311
5422333242323
633503524553
75312526054
oct1510025765
9510327326
10220212213
11103338771
12618b9759
13368131b0
142136439b
15144ed0e3
hexd202bf5

220212213 has 16 divisors (see below), whose sum is σ = 319467456. Its totient is φ = 134115840.

The previous prime is 220212211. The next prime is 220212217. The reversal of 220212213 is 312212022.

It is a happy number.

220212213 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 220212213 - 21 = 220212211 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 220212192 and 220212201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220212211) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25323 + ... + 32888.

It is an arithmetic number, because the mean of its divisors is an integer number (19966716).

Almost surely, 2220212213 is an apocalyptic number.

It is an amenable number.

220212213 is a deficient number, since it is larger than the sum of its proper divisors (99255243).

220212213 is a wasteful number, since it uses less digits than its factorization.

220212213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58324.

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 220212213 is about 14839.5489486709. The cubic root of 220212213 is about 603.8751158044.

Adding to 220212213 its reverse (312212022), we get a palindrome (532424235).

The spelling of 220212213 in words is "two hundred twenty million, two hundred twelve thousand, two hundred thirteen".

Divisors: 1 3 13 39 97 291 1261 3783 58211 174633 756743 2270229 5646467 16939401 73404071 220212213