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2010111112221 = 3173353101310831
BaseRepresentation
bin11101010000000011111…
…101010111010000011101
321010011110002200120101220
4131100003331113100131
5230413201421042341
64135233213123553
7265140266353242
oct35200375272035
97104402616356
102010111112221
11705535357083
122856a61895b9
13117725286204
146d40b6975c9
153744a9d7a66
hex1d403f5741d

2010111112221 has 32 divisors (see below), whose sum is σ = 2706195128832. Its totient is φ = 1327119636480.

The previous prime is 2010111112183. The next prime is 2010111112237. The reversal of 2010111112221 is 1222111110102.

It is a happy number.

It is not a de Polignac number, because 2010111112221 - 26 = 2010111112157 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2010111112221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2010111112241) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 185583276 + ... + 185594106.

It is an arithmetic number, because the mean of its divisors is an integer number (84568597776).

Almost surely, 22010111112221 is an apocalyptic number.

It is an amenable number.

2010111112221 is a deficient number, since it is larger than the sum of its proper divisors (696084016611).

2010111112221 is a wasteful number, since it uses less digits than its factorization.

2010111112221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12373.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 2010111112221 its reverse (1222111110102), we get a palindrome (3232222222323).

The spelling of 2010111112221 in words is "two trillion, ten billion, one hundred eleven million, one hundred twelve thousand, two hundred twenty-one".

Divisors: 1 3 173 353 519 1013 1059 3039 10831 32493 61069 175249 183207 357589 525747 1072767 1873763 3823343 5621289 10971803 11470029 32915409 61862897 185588691 661438339 1898121919 1984315017 3873046459 5694365757 11619139377 670037037407 2010111112221