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223000221 = 3372009011
BaseRepresentation
bin11010100101010…
…11011010011101
3120112121120210110
431102223122131
5424042001341
634043400233
75345320263
oct1522533235
9515546713
10223000221
11104972404
1262823079
133727b1c2
142188c433
151489e216
hexd4ab69d

223000221 has 8 divisors (see below), whose sum is σ = 305369824. Its totient is φ = 144648720.

The previous prime is 223000213. The next prime is 223000229. The reversal of 223000221 is 122000322.

It is an interprime number because it is at equal distance from previous prime (223000213) and next prime (223000229).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 223000221 - 23 = 223000213 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 223000197 and 223000206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (223000229) 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, 1004395 + ... + 1004616.

It is an arithmetic number, because the mean of its divisors is an integer number (38171228).

Almost surely, 2223000221 is an apocalyptic number.

It is an amenable number.

223000221 is a deficient number, since it is larger than the sum of its proper divisors (82369603).

223000221 is a wasteful number, since it uses less digits than its factorization.

223000221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2009051.

The product of its (nonzero) digits is 48, while the sum is 12.

The square root of 223000221 is about 14933.1919226936. The cubic root of 223000221 is about 606.4128997753.

Adding to 223000221 its reverse (122000322), we get a palindrome (345000543).

The spelling of 223000221 in words is "two hundred twenty-three million, two hundred twenty-one", and thus it is an aban number.

Divisors: 1 3 37 111 2009011 6027033 74333407 223000221