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120112302221 = 137876732133
BaseRepresentation
bin110111111011101000…
…0000100100010001101
3102111000211111011011222
41233313100010202031
53431442222132341
6131102343253125
711451331503062
oct1576720044215
9374024434158
10120112302221
1146a3729947a
121b34144a1a5
13b4325475a2
145b5621ac69
1531cec8a44b
hex1bf740488d

120112302221 has 4 divisors (see below), whose sum is σ = 120989034492. Its totient is φ = 119235569952.

The previous prime is 120112302217. The next prime is 120112302239. The reversal of 120112302221 is 122203211021.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 122203211021 = 331369193991.

It can be written as a sum of positive squares in 2 ways, for example, as 51080520100 + 69031782121 = 226010^2 + 262739^2 .

It is a cyclic number.

It is not a de Polignac number, because 120112302221 - 22 = 120112302217 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 120112302221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120112302241) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 438365930 + ... + 438366203.

It is an arithmetic number, because the mean of its divisors is an integer number (30247258623).

Almost surely, 2120112302221 is an apocalyptic number.

It is an amenable number.

120112302221 is a deficient number, since it is larger than the sum of its proper divisors (876732271).

120112302221 is an equidigital number, since it uses as much as digits as its factorization.

120112302221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 876732270.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 120112302221 its reverse (122203211021), we get a palindrome (242315513242).

The spelling of 120112302221 in words is "one hundred twenty billion, one hundred twelve million, three hundred two thousand, two hundred twenty-one".

Divisors: 1 137 876732133 120112302221