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12110202020 = 2257212357349
BaseRepresentation
bin10110100011101001…
…10000010010100100
31011020222111000002202
423101310300102210
5144300202431040
65321403354032
7606050006300
oct132164602244
934228430082
1012110202020
115154991024
12241b822918
1311acc3ab17
1482c506d00
154ad28d015
hex2d1d304a4

12110202020 has 36 divisors (see below), whose sum is σ = 29583495900. Its totient is φ = 4152068928.

The previous prime is 12110202019. The next prime is 12110202037. The reversal of 12110202020 is 2020201121.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 9135154084 + 2975047936 = 95578^2 + 54544^2 .

It is a junction number, because it is equal to n+sod(n) for n = 12110201992 and 12110202010.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6177695 + ... + 6179654.

It is an arithmetic number, because the mean of its divisors is an integer number (821763775).

Almost surely, 212110202020 is an apocalyptic number.

12110202020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12110202020 is an abundant number, since it is smaller than the sum of its proper divisors (17473293880).

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

12110202020 is a wasteful number, since it uses less digits than its factorization.

12110202020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12357372 (or 12357363 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 12110202020 its reverse (2020201121), we get a palindrome (14130403141).

The spelling of 12110202020 in words is "twelve billion, one hundred ten million, two hundred two thousand, twenty".

Divisors: 1 2 4 5 7 10 14 20 28 35 49 70 98 140 196 245 490 980 12357349 24714698 49429396 61786745 86501443 123573490 173002886 247146980 346005772 432507215 605510101 865014430 1211020202 1730028860 2422040404 3027550505 6055101010 12110202020