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122022112220 = 22543141886177
BaseRepresentation
bin111000110100100010…
…1011010101111011100
3102122221221010112222122
41301221011122233130
53444400130042340
6132020045202112
711546551561211
oct1615105325734
9378857115878
10122022112220
1147827334a48
121b794b60338
13b678104388
145c97b19b08
153292784db5
hex1c6915abdc

122022112220 has 24 divisors (see below), whose sum is σ = 262205656944. Its totient is φ = 47673755136.

The previous prime is 122022112193. The next prime is 122022112237. The reversal of 122022112220 is 22211220221.

It is a happy number.

It is a congruent number.

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, 70942229 + ... + 70943948.

It is an arithmetic number, because the mean of its divisors is an integer number (10925235706).

Almost surely, 2122022112220 is an apocalyptic number.

122022112220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

122022112220 is an abundant number, since it is smaller than the sum of its proper divisors (140183544724).

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

122022112220 is a wasteful number, since it uses less digits than its factorization.

122022112220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141886229 (or 141886227 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 122022112220 its reverse (22211220221), we get a palindrome (144233332441).

The spelling of 122022112220 in words is "one hundred twenty-two billion, twenty-two million, one hundred twelve thousand, two hundred twenty".

Divisors: 1 2 4 5 10 20 43 86 172 215 430 860 141886177 283772354 567544708 709430885 1418861770 2837723540 6101105611 12202211222 24404422444 30505528055 61011056110 122022112220