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10001201111 = 11472411589
BaseRepresentation
bin10010101000001111…
…00011011111010111
3221211000000122201222
421110013203133113
5130440301413421
64332224240555
7502560543506
oct112407433727
927730018658
1010001201111
114272465470
121b3147015b
13c3501b0a5
146ac39683d
153d8048cab
hex2541e37d7

10001201111 has 12 divisors (see below), whose sum is σ = 11147503560. Its totient is φ = 8898532560.

The previous prime is 10001201011. The next prime is 10001201123. The reversal of 10001201111 is 11110210001.

It is a happy number.

It is not a de Polignac number, because 10001201111 - 210 = 10001200087 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 (10001201191) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 181496 + ... + 230093.

It is an arithmetic number, because the mean of its divisors is an integer number (928958630).

Almost surely, 210001201111 is an apocalyptic number.

10001201111 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

10001201111 is a deficient number, since it is larger than the sum of its proper divisors (1146302449).

10001201111 is an equidigital number, since it uses as much as digits as its factorization.

10001201111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 411694 (or 411647 counting only the distinct ones).

The product of its (nonzero) digits is 2, while the sum is 8.

Adding to 10001201111 its reverse (11110210001), we get a palindrome (21111411112).

It can be divided in two parts, 10001 and 201111, that added together give a palindrome (211112).

The spelling of 10001201111 in words is "ten billion, one million, two hundred one thousand, one hundred eleven".

Divisors: 1 11 47 517 2209 24299 411589 4527479 19344683 212791513 909200101 10001201111