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120212201 = 283742373
BaseRepresentation
bin1110010101001…
…00101011101001
322101012102010202
413022210223221
5221233242301
615532321545
72656533614
oct712445351
9271172122
10120212201
116194722a
12343132b5
131bb9c6a5
1411d7317b
15a84866b
hex72a4ae9

120212201 has 4 divisors (see below), whose sum is σ = 120257412. Its totient is φ = 120166992.

The previous prime is 120212171. The next prime is 120212243. The reversal of 120212201 is 102212021.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 5400976 + 114811225 = 2324^2 + 10715^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-120212201 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (120212291) 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, 18350 + ... + 24023.

It is an arithmetic number, because the mean of its divisors is an integer number (30064353).

Almost surely, 2120212201 is an apocalyptic number.

It is an amenable number.

120212201 is a deficient number, since it is larger than the sum of its proper divisors (45211).

120212201 is an equidigital number, since it uses as much as digits as its factorization.

120212201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45210.

The product of its (nonzero) digits is 16, while the sum is 11.

The square root of 120212201 is about 10964.1324782219. The cubic root of 120212201 is about 493.5329840295.

Adding to 120212201 its reverse (102212021), we get a palindrome (222424222).

The spelling of 120212201 in words is "one hundred twenty million, two hundred twelve thousand, two hundred one".

Divisors: 1 2837 42373 120212201