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12102110201210 = 257768115579241
BaseRepresentation
bin1011000000011011110111…
…1110101100010101111010
31120211221122212102202220112
42300012331332230111322
53041240110202414320
641423344354024322
72356230400263101
oct260067576542572
946757585382815
1012102110201210
113946526786347
1214355782780a2
1369a2bb44c4a3
142dba60dc3038
1515ec0c539ec5
hexb01bdfac57a

12102110201210 has 16 divisors (see below), whose sum is σ = 21784080186792. Its totient is φ = 4840781452800.

The previous prime is 12102110201183. The next prime is 12102110201213. The reversal of 12102110201210 is 1210201120121.

It can be written as a sum of positive squares in 4 ways, for example, as 6507177540889 + 5594932660321 = 2550917^2 + 2365361^2 .

It is a super-2 number, since 2×121021102012102 (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12102110201213) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7012811 + ... + 8566430.

Almost surely, 212102110201210 is an apocalyptic number.

12102110201210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12102110201210 is a deficient number, since it is larger than the sum of its proper divisors (9681969985582).

12102110201210 is a wasteful number, since it uses less digits than its factorization.

12102110201210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15656929.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 12102110201210 its reverse (1210201120121), we get a palindrome (13312311321331).

The spelling of 12102110201210 in words is "twelve trillion, one hundred two billion, one hundred ten million, two hundred one thousand, two hundred ten".

Divisors: 1 2 5 10 77681 155362 388405 776810 15579241 31158482 77896205 155792410 1210211020121 2420422040242 6051055100605 12102110201210