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12201031223 = 174715270377
BaseRepresentation
bin10110101110011110…
…01111011000110111
31011111022101121100022
423113033033120313
5144441430444343
65334410235355
7611232024413
oct132717173067
934438347308
1012201031223
1151a1189387
122446125b5b
1311c59c0304
1483a5cbd43
154b6230568
hex2d73cf637

12201031223 has 8 divisors (see below), whose sum is σ = 13193606592. Its totient is φ = 11238996736.

The previous prime is 12201031159. The next prime is 12201031231. The reversal of 12201031223 is 32213010221.

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 12201031223 - 26 = 12201031159 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12201031123) 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, 7634390 + ... + 7635987.

It is an arithmetic number, because the mean of its divisors is an integer number (1649200824).

Almost surely, 212201031223 is an apocalyptic number.

12201031223 is a deficient number, since it is larger than the sum of its proper divisors (992575369).

12201031223 is a wasteful number, since it uses less digits than its factorization.

12201031223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15270441.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 12201031223 its reverse (32213010221), we get a palindrome (44414041444).

The spelling of 12201031223 in words is "twelve billion, two hundred one million, thirty-one thousand, two hundred twenty-three".

Divisors: 1 17 47 799 15270377 259596409 717707719 12201031223