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120130221 = 343392479
BaseRepresentation
bin1110010100100…
…00101010101101
322101001020200110
413022100222231
5221223131341
615530450233
72656042611
oct712205255
9271036613
10120130221
11618a0682
1234293979
131bb71293
1411d51341
15a82e216
hex7290aad

120130221 has 8 divisors (see below), whose sum is σ = 160545280. Its totient is φ = 79900992.

The previous prime is 120130193. The next prime is 120130229. The reversal of 120130221 is 122031021.

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

It is not a de Polignac number, because 120130221 - 210 = 120129197 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 120130197 and 120130206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120130229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44941 + ... + 47538.

It is an arithmetic number, because the mean of its divisors is an integer number (20068160).

Almost surely, 2120130221 is an apocalyptic number.

It is an amenable number.

120130221 is a deficient number, since it is larger than the sum of its proper divisors (40415059).

120130221 is an equidigital number, since it uses as much as digits as its factorization.

120130221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92915.

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 120130221 is about 10960.3932867393. The cubic root of 120130221 is about 493.4207684792.

Adding to 120130221 its reverse (122031021), we get a palindrome (242161242).

The spelling of 120130221 in words is "one hundred twenty million, one hundred thirty thousand, two hundred twenty-one".

Divisors: 1 3 433 1299 92479 277437 40043407 120130221