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221232120113123 = 7731014286530393
BaseRepresentation
bin110010010011010110011101…
…111011101010011111100011
31002000022120202211110111000222
4302103112131323222133203
5212444131340222104443
62102304344413433255
764412331113445230
oct6223263573523743
91060276684414028
10221232120113123
1164545019326909
122099032549b82b
13965a13a5332c2
143c8b998218787
151a89b4d926468
hexc9359deea7e3

221232120113123 has 16 divisors (see below), whose sum is σ = 258837851311296. Its totient is φ = 185178112934400.

The previous prime is 221232120113111. The next prime is 221232120113167. The reversal of 221232120113123 is 321311021232122.

It is a cyclic number.

It is not a de Polignac number, because 221232120113123 - 28 = 221232120112867 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 221232120113092 and 221232120113101.

It is not an unprimeable number, because it can be changed into a prime (221232120113723) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2143213586 + ... + 2143316807.

It is an arithmetic number, because the mean of its divisors is an integer number (16177365706956).

Almost surely, 2221232120113123 is an apocalyptic number.

221232120113123 is a deficient number, since it is larger than the sum of its proper divisors (37605731198173).

221232120113123 is a wasteful number, since it uses less digits than its factorization.

221232120113123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4286530574.

The product of its (nonzero) digits is 1728, while the sum is 26.

Adding to 221232120113123 its reverse (321311021232122), we get a palindrome (542543141345245).

The spelling of 221232120113123 in words is "two hundred twenty-one trillion, two hundred thirty-two billion, one hundred twenty million, one hundred thirteen thousand, one hundred twenty-three".

Divisors: 1 7 73 101 511 707 7373 51611 4286530393 30005712751 312916718689 432939569693 2190417030823 3030576987851 31604588587589 221232120113123