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12211230232 = 231980337041
BaseRepresentation
bin10110101111101100…
…01001011000011000
31011112000120202202101
423113312021120120
5200002033331412
65335413013144
7611414513215
oct132766113030
934460522671
1012211230232
1151a6a15013
1224496241b4
1311c7b51626
1483bac4b0c
154b7097457
hex2d7d89618

12211230232 has 16 divisors (see below), whose sum is σ = 24101112600. Its totient is φ = 5784266880.

The previous prime is 12211230221. The next prime is 12211230233. The reversal of 12211230232 is 23203211221.

12211230232 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×122112302322 (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12211230233) 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 3 ways as a sum of consecutive naturals, for example, 40168369 + ... + 40168672.

Almost surely, 212211230232 is an apocalyptic number.

It is an amenable number.

12211230232 is a deficient number, since it is larger than the sum of its proper divisors (11889882368).

12211230232 is a wasteful number, since it uses less digits than its factorization.

12211230232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80337066 (or 80337062 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 12211230232 its reverse (23203211221), we get a palindrome (35414441453).

The spelling of 12211230232 in words is "twelve billion, two hundred eleven million, two hundred thirty thousand, two hundred thirty-two".

Divisors: 1 2 4 8 19 38 76 152 80337041 160674082 321348164 642696328 1526403779 3052807558 6105615116 12211230232