Search a number
-
+
120213101 = 891350709
BaseRepresentation
bin1110010101001…
…00111001101101
322101012110101002
413022210321231
5221233304401
615532330045
72656536341
oct712447155
9271173332
10120213101
1161947978
1234313925
131bb9cc18
1411d73621
15a848a6b
hex72a4e6d

120213101 has 4 divisors (see below), whose sum is σ = 121563900. Its totient is φ = 118862304.

The previous prime is 120213089. The next prime is 120213139. The reversal of 120213101 is 101312021.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 101312021 = 281360541.

It can be written as a sum of positive squares in 2 ways, for example, as 15642025 + 104571076 = 3955^2 + 10226^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-120213101 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120213151) 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, 675266 + ... + 675443.

It is an arithmetic number, because the mean of its divisors is an integer number (30390975).

Almost surely, 2120213101 is an apocalyptic number.

It is an amenable number.

120213101 is a deficient number, since it is larger than the sum of its proper divisors (1350799).

120213101 is an equidigital number, since it uses as much as digits as its factorization.

120213101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1350798.

The product of its (nonzero) digits is 12, while the sum is 11.

The square root of 120213101 is about 10964.1735210640. The cubic root of 120213101 is about 493.5342156809.

Adding to 120213101 its reverse (101312021), we get a palindrome (221525122).

The spelling of 120213101 in words is "one hundred twenty million, two hundred thirteen thousand, one hundred one".

Divisors: 1 89 1350709 120213101