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10350221 = 72211229
BaseRepresentation
bin100111011110…
…111010001101
3201110211211112
4213132322031
510122201341
61005501405
7153655400
oct47367215
921424745
1010350221
11592a302
123571865
1321b50bb
141535d37
15d96aeb
hex9dee8d

10350221 has 6 divisors (see below), whose sum is σ = 12040110. Its totient is φ = 8871576.

The previous prime is 10350203. The next prime is 10350251. The reversal of 10350221 is 12205301.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 8934121 + 1416100 = 2989^2 + 1190^2 .

It is not a de Polignac number, because 10350221 - 218 = 10088077 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10350196 and 10350205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10350251) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 105566 + ... + 105663.

It is an arithmetic number, because the mean of its divisors is an integer number (2006685).

Almost surely, 210350221 is an apocalyptic number.

It is an amenable number.

10350221 is a deficient number, since it is larger than the sum of its proper divisors (1689889).

10350221 is an equidigital number, since it uses as much as digits as its factorization.

10350221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 211243 (or 211236 counting only the distinct ones).

The product of its (nonzero) digits is 60, while the sum is 14.

The square root of 10350221 is about 3217.1759355062. The cubic root of 10350221 is about 217.9297602177.

Adding to 10350221 its reverse (12205301), we get a palindrome (22555522).

The spelling of 10350221 in words is "ten million, three hundred fifty thousand, two hundred twenty-one".

Divisors: 1 7 49 211229 1478603 10350221