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12000230221 = 78320654441
BaseRepresentation
bin10110010110100010…
…01111101101001101
31010222022112212011011
423023101033231031
5144034024331341
65302434325221
7603243162640
oct131321175515
933868485134
1012000230221
1150a88a9641
1223aaa29811
131193215555
1481ba7ba57
154a37b8b81
hex2cb44fb4d

12000230221 has 8 divisors (see below), whose sum is σ = 13879785024. Its totient is φ = 10161984480.

The previous prime is 12000230213. The next prime is 12000230279. The reversal of 12000230221 is 12203200021.

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 12000230221 - 23 = 12000230213 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12000233221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10326640 + ... + 10327801.

It is an arithmetic number, because the mean of its divisors is an integer number (1734973128).

Almost surely, 212000230221 is an apocalyptic number.

It is an amenable number.

12000230221 is a deficient number, since it is larger than the sum of its proper divisors (1879554803).

12000230221 is an equidigital number, since it uses as much as digits as its factorization.

12000230221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20654531.

The product of its (nonzero) digits is 48, while the sum is 13.

Adding to 12000230221 its reverse (12203200021), we get a palindrome (24203430242).

The spelling of 12000230221 in words is "twelve billion, two hundred thirty thousand, two hundred twenty-one".

Divisors: 1 7 83 581 20654441 144581087 1714318603 12000230221