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12220012230 = 235407333741
BaseRepresentation
bin10110110000101111…
…01001011011000110
31011112122002221101120
423120113221123012
5200011310342410
65340325134410
7611552250546
oct133027513306
934478087346
1012220012230
115200973068
12245055a406
1311c990798a
1483cd2d326
154b7c2e570
hex2d85e96c6

12220012230 has 16 divisors (see below), whose sum is σ = 29328029424. Its totient is φ = 3258669920.

The previous prime is 12220012219. The next prime is 12220012249. The reversal of 12220012230 is 3221002221.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 203666841 + ... + 203666900.

It is an arithmetic number, because the mean of its divisors is an integer number (1833001839).

Almost surely, 212220012230 is an apocalyptic number.

12220012230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12220012230 is an abundant number, since it is smaller than the sum of its proper divisors (17108017194).

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

12220012230 is a wasteful number, since it uses less digits than its factorization.

12220012230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 407333751.

The product of its (nonzero) digits is 96, while the sum is 15.

Adding to 12220012230 its reverse (3221002221), we get a palindrome (15441014451).

The spelling of 12220012230 in words is "twelve billion, two hundred twenty million, twelve thousand, two hundred thirty".

Divisors: 1 2 3 5 6 10 15 30 407333741 814667482 1222001223 2036668705 2444002446 4073337410 6110006115 12220012230