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12132301220 = 22513431085179
BaseRepresentation
bin10110100110010010…
…00011100110100100
31011022112001202111122
423103021003212210
5144321332114340
65323513153112
7606435600404
oct132311034644
934275052448
1012132301220
115166405526
1224270bb798
1311b46a7880
1483141a804
154b01a5db5
hex2d32439a4

12132301220 has 48 divisors (see below), whose sum is σ = 28075776960. Its totient is φ = 4375437696.

The previous prime is 12132301189. The next prime is 12132301229. The reversal of 12132301220 is 2210323121.

It is not an unprimeable number, because it can be changed into a prime (12132301229) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 531410 + ... + 553769.

It is an arithmetic number, because the mean of its divisors is an integer number (584912020).

Almost surely, 212132301220 is an apocalyptic number.

12132301220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12132301220 is an abundant number, since it is smaller than the sum of its proper divisors (15943475740).

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

12132301220 is a wasteful number, since it uses less digits than its factorization.

12132301220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1085244 (or 1085242 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 12132301220 its reverse (2210323121), we get a palindrome (14342624341).

The spelling of 12132301220 in words is "twelve billion, one hundred thirty-two million, three hundred one thousand, two hundred twenty".

Divisors: 1 2 4 5 10 13 20 26 43 52 65 86 130 172 215 260 430 559 860 1118 2236 2795 5590 11180 1085179 2170358 4340716 5425895 10851790 14107327 21703580 28214654 46662697 56429308 70536635 93325394 141073270 186650788 233313485 282146540 466626970 606615061 933253940 1213230122 2426460244 3033075305 6066150610 12132301220