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212204219 = 10718110957
BaseRepresentation
bin11001010010111…
…11101010111011
3112210022002110112
430221133222323
5413311013334
633020134535
75154464123
oct1451375273
9483262415
10212204219
11a9869197
125b09744b
1334c6b236
142027bc83
151396a4ce
hexca5fabb

212204219 has 8 divisors (see below), whose sum is σ = 215390448. Its totient is φ = 209040480.

The previous prime is 212204197. The next prime is 212204221. The reversal of 212204219 is 912402212.

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 212204219 - 220 = 211155643 is a prime.

It is a super-2 number, since 2×2122042192 = 90061261122799922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 212204194 and 212204203.

It is not an unprimeable number, because it can be changed into a prime (212204249) 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, 13889 + ... + 24845.

It is an arithmetic number, because the mean of its divisors is an integer number (26923806).

Almost surely, 2212204219 is an apocalyptic number.

212204219 is a deficient number, since it is larger than the sum of its proper divisors (3186229).

212204219 is a wasteful number, since it uses less digits than its factorization.

212204219 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11245.

The product of its (nonzero) digits is 576, while the sum is 23.

The square root of 212204219 is about 14567.2309997473. The cubic root of 212204219 is about 596.4645970894.

The spelling of 212204219 in words is "two hundred twelve million, two hundred four thousand, two hundred nineteen".

Divisors: 1 107 181 10957 19367 1172399 1983217 212204219