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2010120111220 = 225137731231197
BaseRepresentation
bin11101010000000100011…
…111101100010001110100
321010011110201121202201011
4131100010133230101310
5230413211222024340
64135234134042004
7265140436013344
oct35200437542164
97104421552634
102010120111220
1170553a443171
122856a91a9304
131177270b7270
146d40c95ad24
153744b6b40ea
hex1d4047ec474

2010120111220 has 24 divisors (see below), whose sum is σ = 4545963944424. Its totient is φ = 742198194816.

The previous prime is 2010120111173. The next prime is 2010120111257. The reversal of 2010120111220 is 221110210102.

It can be written as a sum of positive squares in 4 ways, for example, as 2446489444 + 2007673621776 = 49462^2 + 1416924^2 .

It is a super-2 number, since 2×20101201112202 (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a self number, because there is not a number n which added to its sum of digits gives 2010120111220.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3865615339 + ... + 3865615858.

It is an arithmetic number, because the mean of its divisors is an integer number (189415164351).

Almost surely, 22010120111220 is an apocalyptic number.

2010120111220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2010120111220 is an abundant number, since it is smaller than the sum of its proper divisors (2535843833204).

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

2010120111220 is a wasteful number, since it uses less digits than its factorization.

2010120111220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7731231219 (or 7731231217 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 2010120111220 its reverse (221110210102), we get a palindrome (2231230321322).

The spelling of 2010120111220 in words is "two trillion, ten billion, one hundred twenty million, one hundred eleven thousand, two hundred twenty".

Divisors: 1 2 4 5 10 13 20 26 52 65 130 260 7731231197 15462462394 30924924788 38656155985 77312311970 100506005561 154624623940 201012011122 402024022244 502530027805 1005060055610 2010120111220