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2220220000221 = 318118712185357
BaseRepresentation
bin100000010011101111011…
…011001010011111011101
321212020202221121222021120
4200103233123022133131
5242334002310001341
64415542135521153
7316256056423026
oct40235733123735
97766687558246
102220220000221
11786654344473
122ba3632291b9
1313149a9c8a02
1479660163c4d
153cb46678066
hex204ef6ca7dd

2220220000221 has 16 divisors (see below), whose sum is σ = 2978240848128. Its totient is φ = 1471181659200.

The previous prime is 2220220000189. The next prime is 2220220000247. The reversal of 2220220000221 is 1220000220222.

It is not a de Polignac number, because 2220220000221 - 25 = 2220220000189 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2220220000221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2220220000421) 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, 76726 + ... + 2108631.

It is an arithmetic number, because the mean of its divisors is an integer number (186140053008).

Almost surely, 22220220000221 is an apocalyptic number.

It is an amenable number.

2220220000221 is a deficient number, since it is larger than the sum of its proper divisors (758020847907).

2220220000221 is a wasteful number, since it uses less digits than its factorization.

2220220000221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2187412.

The product of its (nonzero) digits is 128, while the sum is 15.

Adding to 2220220000221 its reverse (1220000220222), we get a palindrome (3440220220443).

The spelling of 2220220000221 in words is "two trillion, two hundred twenty billion, two hundred twenty million, two hundred twenty-one", and thus it is an aban number.

Divisors: 1 3 181 543 1871 5613 338651 1015953 2185357 6556071 395549617 1186648851 4088802947 12266408841 740073333407 2220220000221