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12223532221 = 311497393581
BaseRepresentation
bin10110110001001010…
…00100110010111101
31011112212201202220121
423120211010302331
5200013211012341
65340532414541
7611624211115
oct133045046275
934485652817
1012223532221
11520295774a
122451777451
1311ca56ac04
1483d5a8045
154b81c74d1
hex2d8944cbd

12223532221 has 16 divisors (see below), whose sum is σ = 12723264000. Its totient is φ = 11730657600.

The previous prime is 12223532207. The next prime is 12223532227.

12223532221 is nontrivially palindromic in base 10.

12223532221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 12223532221 - 213 = 12223524029 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12223532227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3411651 + ... + 3415231.

It is an arithmetic number, because the mean of its divisors is an integer number (795204000).

Almost surely, 212223532221 is an apocalyptic number.

It is an amenable number.

12223532221 is a deficient number, since it is larger than the sum of its proper divisors (499731779).

12223532221 is a wasteful number, since it uses less digits than its factorization.

12223532221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4500.

The product of its digits is 2880, while the sum is 25.

The spelling of 12223532221 in words is "twelve billion, two hundred twenty-three million, five hundred thirty-two thousand, two hundred twenty-one".

Divisors: 1 31 149 739 3581 4619 22909 110111 111011 533569 2646359 3413441 16540639 82037129 394307491 12223532221