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12231220110 = 2351459279443
BaseRepresentation
bin10110110010000100…
…11001101110001110
31011120102012100201020
423121002121232032
5200022143020420
65341405255010
7612046440564
oct133102315616
934512170636
1012231220110
11520722877a
122454264466
1311cc030265
14840609a34
154b8be5340
hex2d9099b8e

12231220110 has 32 divisors (see below), whose sum is σ = 29375153280. Its totient is φ = 3259411488.

The previous prime is 12231220103. The next prime is 12231220139. The reversal of 12231220110 is 1102213221.

12231220110 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 12231220110.

It is a congruent number.

It is an unprimeable number.

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, 95952 + ... + 183491.

It is an arithmetic number, because the mean of its divisors is an integer number (917973540).

Almost surely, 212231220110 is an apocalyptic number.

12231220110 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12231220110 is an abundant number, since it is smaller than the sum of its proper divisors (17143933170).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12231220110 is a wasteful number, since it uses less digits than its factorization.

12231220110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 280912.

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 12231220110 its reverse (1102213221), we get a palindrome (13333433331).

The spelling of 12231220110 in words is "twelve billion, two hundred thirty-one million, two hundred twenty thousand, one hundred ten".

Divisors: 1 2 3 5 6 10 15 30 1459 2918 4377 7295 8754 14590 21885 43770 279443 558886 838329 1397215 1676658 2794430 4191645 8383290 407707337 815414674 1223122011 2038536685 2446244022 4077073370 6115610055 12231220110