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111110020212 = 223231801322349
BaseRepresentation
bin110011101111010101…
…1000101110001110100
3101121210110002211211210
41213132223011301310
53310023131121322
6123013201201420
711012260405662
oct1473653056164
9347713084753
10111110020212
1143137789794
121964a630270
13a6294786b9
1455407adc32
152d547ac70c
hex19deac5c74

111110020212 has 48 divisors (see below), whose sum is σ = 270555868800. Its totient is φ = 35422831488.

The previous prime is 111110020211. The next prime is 111110020243. The reversal of 111110020212 is 212020011111.

It is a super-2 number, since 2×1111100202122 (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111110020211) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4960414 + ... + 4982762.

It is an arithmetic number, because the mean of its divisors is an integer number (5636580600).

Almost surely, 2111110020212 is an apocalyptic number.

111110020212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

111110020212 is an abundant number, since it is smaller than the sum of its proper divisors (159445848588).

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

111110020212 is a wasteful number, since it uses less digits than its factorization.

111110020212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40392 (or 40390 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 111110020212 its reverse (212020011111), we get a palindrome (323130031323).

The spelling of 111110020212 in words is "one hundred eleven billion, one hundred ten million, twenty thousand, two hundred twelve".

Divisors: 1 2 3 4 6 12 23 46 69 92 138 276 18013 22349 36026 44698 54039 67047 72052 89396 108078 134094 216156 268188 414299 514027 828598 1028054 1242897 1542081 1657196 2056108 2485794 3084162 4971588 6168324 402572537 805145074 1207717611 1610290148 2415435222 4830870444 9259168351 18518336702 27777505053 37036673404 55555010106 111110020212