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2013222220 = 225100661111
BaseRepresentation
bin111011111111111…
…0101010101001100
312012022020021200221
41313333311111030
513110341102340
6531434201124
7100614051352
oct16777652514
95168207627
102013222220
11943458719
124822831a4
13261126769
1415153b7d2
15bbb2544a
hex77ff554c

2013222220 has 12 divisors (see below), whose sum is σ = 4227766704. Its totient is φ = 805288880.

The previous prime is 2013222199. The next prime is 2013222247. The reversal of 2013222220 is 222223102.

It is a junction number, because it is equal to n+sod(n) for n = 2013222194 and 2013222203.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50330536 + ... + 50330575.

It is an arithmetic number, because the mean of its divisors is an integer number (352313892).

Almost surely, 22013222220 is an apocalyptic number.

2013222220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2013222220 is an abundant number, since it is smaller than the sum of its proper divisors (2214544484).

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

2013222220 is a wasteful number, since it uses less digits than its factorization.

2013222220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100661120 (or 100661118 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 2013222220 is about 44868.9449396796. The cubic root of 2013222220 is about 1262.6914459210.

Adding to 2013222220 its reverse (222223102), we get a palindrome (2235445322).

The spelling of 2013222220 in words is "two billion, thirteen million, two hundred twenty-two thousand, two hundred twenty".

Divisors: 1 2 4 5 10 20 100661111 201322222 402644444 503305555 1006611110 2013222220