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11112120210 = 2351721788471
BaseRepresentation
bin10100101100101010…
…10111111110010010
31001200102102012020210
422112111113332102
5140224200321320
65034351144550
7542240314632
oct122625277622
931612365223
1011112120210
114792558424
1221a1515156
131081222a79
14775b386c2
1545083a0e0
hex296557f92

11112120210 has 32 divisors (see below), whose sum is σ = 28237859712. Its totient is φ = 2788924160.

The previous prime is 11112120209. The next prime is 11112120233. The reversal of 11112120210 is 1202121111.

It is a super-2 number, since 2×111121202102 (a number of 21 digits) contains 22 as substring.

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 15 ways as a sum of consecutive naturals, for example, 10893726 + ... + 10894745.

It is an arithmetic number, because the mean of its divisors is an integer number (882433116).

Almost surely, 211112120210 is an apocalyptic number.

11112120210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11112120210 is an abundant number, since it is smaller than the sum of its proper divisors (17125739502).

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

11112120210 is a wasteful number, since it uses less digits than its factorization.

11112120210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21788498.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 11112120210 its reverse (1202121111), we get a palindrome (12314241321).

Subtracting from 11112120210 its reverse (1202121111), we obtain a palindrome (9909999099).

The spelling of 11112120210 in words is "eleven billion, one hundred twelve million, one hundred twenty thousand, two hundred ten".

Divisors: 1 2 3 5 6 10 15 17 30 34 51 85 102 170 255 510 21788471 43576942 65365413 108942355 130730826 217884710 326827065 370404007 653654130 740808014 1111212021 1852020035 2222424042 3704040070 5556060105 11112120210