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20112210101 = 3110913942821
BaseRepresentation
bin10010101110110001…
…111111100010110101
31220220122200010120102
4102232301333202311
5312142211210401
613123414243445
71311253652024
oct225661774265
956818603512
1020112210101
118590900145
123a93656585
131b86a04c49
14d8b1748bb
157caa3356b
hex4aec7f8b5

20112210101 has 16 divisors (see below), whose sum is σ = 21102681600. Its totient is φ = 19145678400.

The previous prime is 20112210073. The next prime is 20112210119. The reversal of 20112210101 is 10101221102.

It is a cyclic number.

It is not a de Polignac number, because 20112210101 - 26 = 20112210037 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20112210301) 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, 448271 + ... + 491091.

It is an arithmetic number, because the mean of its divisors is an integer number (1318917600).

Almost surely, 220112210101 is an apocalyptic number.

It is an amenable number.

20112210101 is a deficient number, since it is larger than the sum of its proper divisors (990471499).

20112210101 is a wasteful number, since it uses less digits than its factorization.

20112210101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43100.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 20112210101 its reverse (10101221102), we get a palindrome (30213431203).

The spelling of 20112210101 in words is "twenty billion, one hundred twelve million, two hundred ten thousand, one hundred one".

Divisors: 1 31 109 139 3379 4309 15151 42821 469681 1327451 4667489 5952119 144692159 184515689 648780971 20112210101