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2122012110220 = 225257412842823
BaseRepresentation
bin11110111000010001110…
…001110010110110001100
321111212021200011020210021
4132320101301302312030
5234231340100011340
64302501111551524
7306211303221022
oct36702161626614
97455250136707
102122012110220
11748a38574112
122a331568b5a4
13125149575cb2
14749c5124712
153a2e9938e4a
hex1ee11c72d8c

2122012110220 has 24 divisors (see below), whose sum is σ = 4473564840864. Its totient is φ = 845502099456.

The previous prime is 2122012110137. The next prime is 2122012110259. The reversal of 2122012110220 is 220112102212.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 2122012110194 and 2122012110203.

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, 206416272 + ... + 206426551.

It is an arithmetic number, because the mean of its divisors is an integer number (186398535036).

Almost surely, 22122012110220 is an apocalyptic number.

2122012110220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2122012110220 is an abundant number, since it is smaller than the sum of its proper divisors (2351552730644).

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

2122012110220 is a wasteful number, since it uses less digits than its factorization.

2122012110220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 412843089 (or 412843087 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 2122012110220 its reverse (220112102212), we get a palindrome (2342124212432).

The spelling of 2122012110220 in words is "two trillion, one hundred twenty-two billion, twelve million, one hundred ten thousand, two hundred twenty".

Divisors: 1 2 4 5 10 20 257 514 1028 1285 2570 5140 412842823 825685646 1651371292 2064214115 4128428230 8256856460 106100605511 212201211022 424402422044 530503027555 1061006055110 2122012110220