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120102011 = 257557839
BaseRepresentation
bin1110010100010…
…01110001111011
322100222210222122
413022021301323
5221221231021
615530111455
72655564431
oct712116173
9270883878
10120102011
1161881467
123427b58b
131bb614a3
1411d44d51
15a825bab
hex7289c7b

120102011 has 8 divisors (see below), whose sum is σ = 120929760. Its totient is φ = 119277568.

The previous prime is 120102001. The next prime is 120102013. The reversal of 120102011 is 110201021.

Adding to 120102011 its reverse (110201021), we get a palindrome (230303032).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-120102011 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 120102011.

It is not an unprimeable number, because it can be changed into a prime (120102013) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 142730 + ... + 143568.

It is an arithmetic number, because the mean of its divisors is an integer number (15116220).

Almost surely, 2120102011 is an apocalyptic number.

120102011 is a deficient number, since it is larger than the sum of its proper divisors (827749).

120102011 is an equidigital number, since it uses as much as digits as its factorization.

120102011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1653.

The product of its (nonzero) digits is 4, while the sum is 8.

The square root of 120102011 is about 10959.1063048042. The cubic root of 120102011 is about 493.3821423687.

The spelling of 120102011 in words is "one hundred twenty million, one hundred two thousand, eleven".

Divisors: 1 257 557 839 143149 215623 467323 120102011