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20102222 = 271817933
BaseRepresentation
bin100110010101…
…1110001001110
31101211022001202
41030223301032
520121232342
61554505502
7332603030
oct114536116
941738052
1020102222
1110390108
126895292
13421ab0a
142953c50
151b71332
hex132bc4e

20102222 has 16 divisors (see below), whose sum is σ = 34655712. Its totient is φ = 8566560.

The previous prime is 20102219. The next prime is 20102227. The reversal of 20102222 is 22220102.

20102222 is a modest number, since divided by 2222 gives 2010 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20102227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1433 + ... + 6500.

It is an arithmetic number, because the mean of its divisors is an integer number (2165982).

Almost surely, 220102222 is an apocalyptic number.

20102222 is a deficient number, since it is larger than the sum of its proper divisors (14553490).

20102222 is a wasteful number, since it uses less digits than its factorization.

20102222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8123.

The product of its (nonzero) digits is 32, while the sum is 11.

The square root of 20102222 is about 4483.5501558475. The cubic root of 20102222 is about 271.9034313333.

Adding to 20102222 its reverse (22220102), we get a palindrome (42322324).

It can be divided in two parts, 20102 and 222, that multiplied together give a palindrome (4462644).

The spelling of 20102222 in words is "twenty million, one hundred two thousand, two hundred twenty-two".

Divisors: 1 2 7 14 181 362 1267 2534 7933 15866 55531 111062 1435873 2871746 10051111 20102222