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13211030120 = 2352931127221
BaseRepresentation
bin11000100110111000…
…00101001001101000
31021002200212212100212
430103130011021220
5204024010430440
610022530120252
7645244621541
oct142334051150
937080785325
1013211030120
11566a311512
122688420088
13132701b6b2
148d47bd4c8
15524c39465
hex313705268

13211030120 has 32 divisors (see below), whose sum is σ = 29826294120. Its totient is φ = 5266371840.

The previous prime is 13211030101. The next prime is 13211030143. The reversal of 13211030120 is 2103011231.

It can be written as a sum of positive squares in 4 ways, for example, as 11403249796 + 1807780324 = 106786^2 + 42518^2 .

It is a junction number, because it is equal to n+sod(n) for n = 13211030095 and 13211030104.

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, 551891 + ... + 575330.

Almost surely, 213211030120 is an apocalyptic number.

13211030120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13211030120 is an abundant number, since it is smaller than the sum of its proper divisors (16615264000).

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

13211030120 is a wasteful number, since it uses less digits than its factorization.

13211030120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1127525 (or 1127521 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 14.

Adding to 13211030120 its reverse (2103011231), we get a palindrome (15314041351).

The spelling of 13211030120 in words is "thirteen billion, two hundred eleven million, thirty thousand, one hundred twenty".

Divisors: 1 2 4 5 8 10 20 40 293 586 1172 1465 2344 2930 5860 11720 1127221 2254442 4508884 5636105 9017768 11272210 22544420 45088840 330275753 660551506 1321103012 1651378765 2642206024 3302757530 6605515060 13211030120