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120222011221220 = 22523337775525811
BaseRepresentation
bin11011010101011101011110…
…010001011110010011100100
3120202200010000200001121112102
4123111131132101132103210
5111224204134333034340
61103405121323511232
734215516340343606
oct3325353621362344
9522603020047472
10120222011221220
1135340961175727
12115979b8388518
135210b6b9c94ac
142198ac25b3176
15dd73b51c3215
hex6d575e45e4e4

120222011221220 has 48 divisors (see below), whose sum is σ = 264224746251648. Its totient is φ = 45861494300160.

The previous prime is 120222011221177. The next prime is 120222011221259. The reversal of 120222011221220 is 22122110222021.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 120222011221192 and 120222011221201.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 387607886 + ... + 387917925.

It is an arithmetic number, because the mean of its divisors is an integer number (5504682213576).

Almost surely, 2120222011221220 is an apocalyptic number.

120222011221220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

120222011221220 is an abundant number, since it is smaller than the sum of its proper divisors (144002735030428).

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

120222011221220 is a wasteful number, since it uses less digits than its factorization.

120222011221220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 775526180 (or 775526178 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 120222011221220 its reverse (22122110222021), we get a palindrome (142344121443241).

The spelling of 120222011221220 in words is "one hundred twenty trillion, two hundred twenty-two billion, eleven million, two hundred twenty-one thousand, two hundred twenty".

Divisors: 1 2 4 5 10 20 23 46 92 115 230 337 460 674 1348 1685 3370 6740 7751 15502 31004 38755 77510 155020 775525811 1551051622 3102103244 3877629055 7755258110 15510516220 17837093653 35674187306 71348374612 89185468265 178370936530 261352198307 356741873060 522704396614 1045408793228 1306760991535 2613521983070 5227043966140 6011100561061 12022201122122 24044402244244 30055502805305 60111005610610 120222011221220