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20110222002 = 23131571642187
BaseRepresentation
bin10010101110101010…
…011010001010110010
31220220111221010102010
4102232222122022302
5312141204101002
613123303503350
71311231031563
oct225652321262
956814833363
1020110222002
11858a772492
123a92a57b56
131b8648a060
14d8abb816a
157ca78e46c
hex4aea9a2b2

20110222002 has 32 divisors (see below), whose sum is σ = 43590238272. Its totient is φ = 6148344384.

The previous prime is 20110221977. The next prime is 20110222007. The reversal of 20110222002 is 20022201102.

It is not an unprimeable number, because it can be changed into a prime (20110222007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 808848 + ... + 833339.

It is an arithmetic number, because the mean of its divisors is an integer number (1362194946).

Almost surely, 220110222002 is an apocalyptic number.

20110222002 is an abundant number, since it is smaller than the sum of its proper divisors (23480016270).

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

20110222002 is a wasteful number, since it uses less digits than its factorization.

20110222002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1642362.

The product of its (nonzero) digits is 32, while the sum is 12.

Adding to 20110222002 its reverse (20022201102), we get a palindrome (40132423104).

The spelling of 20110222002 in words is "twenty billion, one hundred ten million, two hundred twenty-two thousand, two".

Divisors: 1 2 3 6 13 26 39 78 157 314 471 942 2041 4082 6123 12246 1642187 3284374 4926561 9853122 21348431 42696862 64045293 128090586 257823359 515646718 773470077 1546940154 3351703667 6703407334 10055111001 20110222002