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12110232220 = 22519728310861
BaseRepresentation
bin10110100011101001…
…10111101010011100
31011020222112112112021
423101310313222130
5144300204412340
65321404145524
7606050163322
oct132164675234
934228475467
1012110232220
115154a01789
12241b8382a4
1311acc4b7a8
1482c513d12
154ad296e4a
hex2d1d37a9c

12110232220 has 48 divisors (see below), whose sum is σ = 25653263328. Its totient is φ = 4802031360.

The previous prime is 12110232157. The next prime is 12110232227. The reversal of 12110232220 is 2223201121.

It is a happy number.

It is a super-2 number, since 2×121102322202 (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12110232194 and 12110232203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12110232227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1109590 + ... + 1120450.

It is an arithmetic number, because the mean of its divisors is an integer number (534442986).

Almost surely, 212110232220 is an apocalyptic number.

12110232220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12110232220 is an abundant number, since it is smaller than the sum of its proper divisors (13543031108).

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

12110232220 is a wasteful number, since it uses less digits than its factorization.

12110232220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11350 (or 11348 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 12110232220 its reverse (2223201121), we get a palindrome (14333433341).

The spelling of 12110232220 in words is "twelve billion, one hundred ten million, two hundred thirty-two thousand, two hundred twenty".

Divisors: 1 2 4 5 10 20 197 283 394 566 788 985 1132 1415 1970 2830 3940 5660 10861 21722 43444 54305 55751 108610 111502 217220 223004 278755 557510 1115020 2139617 3073663 4279234 6147326 8558468 10698085 12294652 15368315 21396170 30736630 42792340 61473260 605511611 1211023222 2422046444 3027558055 6055116110 12110232220