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123120120002 = 211157295312071
BaseRepresentation
bin111001010101010000…
…1111111000011000010
3102202210110020010111112
41302222201333003002
54004122222320002
6132321031243322
711616013516115
oct1625241770302
9382713203445
10123120120002
11482401094a0
121ba40819542
13b7c1738319
145d5d89a57c
153308d75852
hex1caa87f0c2

123120120002 has 32 divisors (see below), whose sum is σ = 202837993344. Its totient is φ = 55583798400.

The previous prime is 123120119957. The next prime is 123120120043. The reversal of 123120120002 is 200021021321.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10193627 + ... + 10205697.

It is an arithmetic number, because the mean of its divisors is an integer number (6338687292).

Almost surely, 2123120120002 is an apocalyptic number.

123120120002 is a deficient number, since it is larger than the sum of its proper divisors (79717873342).

123120120002 is a wasteful number, since it uses less digits than its factorization.

123120120002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15194.

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 123120120002 its reverse (200021021321), we get a palindrome (323141141323).

The spelling of 123120120002 in words is "one hundred twenty-three billion, one hundred twenty million, one hundred twenty thousand, two".

Divisors: 1 2 11 22 157 314 1727 2953 3454 5906 12071 24142 32483 64966 132781 265562 463621 927242 1895147 3790294 5099831 10199662 20846617 35645663 41693234 71291326 392102293 784204586 5596369091 11192738182 61560060001 123120120002