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220310121 = 3233315179
BaseRepresentation
bin11010010000110…
…10101001101001
3120100112220200010
431020122221221
5422344410441
633510002133
75313414363
oct1510325151
9510486603
10220310121
111033a5289
1261946349
1336848925
142138bd33
151451c116
hexd21aa69

220310121 has 8 divisors (see below), whose sum is σ = 295008480. Its totient is φ = 146242592.

The previous prime is 220310107. The next prime is 220310141. The reversal of 220310121 is 121013022.

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

It is a cyclic number.

It is not a de Polignac number, because 220310121 - 27 = 220309993 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 220310097 and 220310106.

It is not an unprimeable number, because it can be changed into a prime (220310141) 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, 156891 + ... + 158288.

It is an arithmetic number, because the mean of its divisors is an integer number (36876060).

Almost surely, 2220310121 is an apocalyptic number.

It is an amenable number.

220310121 is a deficient number, since it is larger than the sum of its proper divisors (74698359).

220310121 is a wasteful number, since it uses less digits than its factorization.

220310121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 315415.

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

The square root of 220310121 is about 14842.8474694042. The cubic root of 220310121 is about 603.9645983447.

Adding to 220310121 its reverse (121013022), we get a palindrome (341323143).

The spelling of 220310121 in words is "two hundred twenty million, three hundred ten thousand, one hundred twenty-one".

Divisors: 1 3 233 699 315179 945537 73436707 220310121