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212020230020 = 22579134190019
BaseRepresentation
bin1100010101110101100…
…0111111011110000100
3202021021001110122012212
43011131120333132010
511433204134330040
6241222321202552
721214026135254
oct3053530773604
9667231418185
10212020230020
1181a0a98a9a5
1235111190458
1316cbb717a11
14a394687964
1557ad88dd65
hex315d63f784

212020230020 has 24 divisors (see below), whose sum is σ = 450878467200. Its totient is φ = 83734571232.

The previous prime is 212020230017. The next prime is 212020230073. The reversal of 212020230020 is 20032020212.

It is a junction number, because it is equal to n+sod(n) for n = 212020229977 and 212020230004.

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, 67093430 + ... + 67096589.

It is an arithmetic number, because the mean of its divisors is an integer number (18786602800).

Almost surely, 2212020230020 is an apocalyptic number.

212020230020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212020230020 is an abundant number, since it is smaller than the sum of its proper divisors (238858237180).

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

212020230020 is a wasteful number, since it uses less digits than its factorization.

212020230020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134190107 (or 134190105 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 14.

Adding to 212020230020 its reverse (20032020212), we get a palindrome (232052250232).

The spelling of 212020230020 in words is "two hundred twelve billion, twenty million, two hundred thirty thousand, twenty".

Divisors: 1 2 4 5 10 20 79 158 316 395 790 1580 134190019 268380038 536760076 670950095 1341900190 2683800380 10601011501 21202023002 42404046004 53005057505 106010115010 212020230020