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1212231230130 = 235311303474441
BaseRepresentation
bin10001101000111110100…
…111001010001010110010
311021212222110220222102210
4101220332213022022302
5124330122143331010
62324520310152550
7153403135305054
oct21507647121262
94255873828383
101212231230130
11428116a21348
12176b31952756
138a40b61c69b
144295ab378d4
15217ed8d3b20
hex11a3e9ca2b2

1212231230130 has 32 divisors (see below), whose sum is σ = 3003205114368. Its totient is φ = 312833865600.

The previous prime is 1212231230117. The next prime is 1212231230149. The reversal of 1212231230130 is 310321322121.

It is a junction number, because it is equal to n+sod(n) for n = 1212231230097 and 1212231230106.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 651736291 + ... + 651738150.

It is an arithmetic number, because the mean of its divisors is an integer number (93850159824).

Almost surely, 21212231230130 is an apocalyptic number.

1212231230130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1212231230130 is an abundant number, since it is smaller than the sum of its proper divisors (1790973884238).

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

1212231230130 is a wasteful number, since it uses less digits than its factorization.

1212231230130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1303474482.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 1212231230130 its reverse (310321322121), we get a palindrome (1522552552251).

The spelling of 1212231230130 in words is "one trillion, two hundred twelve billion, two hundred thirty-one million, two hundred thirty thousand, one hundred thirty".

Divisors: 1 2 3 5 6 10 15 30 31 62 93 155 186 310 465 930 1303474441 2606948882 3910423323 6517372205 7820846646 13034744410 19552116615 39104233230 40407707671 80815415342 121223123013 202038538355 242446246026 404077076710 606115615065 1212231230130