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1021201 = 6116741
BaseRepresentation
bin11111001010100010001
31220212211021
43321110101
5230134301
633515441
711452156
oct3712421
91825737
101021201
11638275
12412b81
13299a7c
141c822d
151528a1
hexf9511

1021201 has 4 divisors (see below), whose sum is σ = 1038004. Its totient is φ = 1004400.

The previous prime is 1021199. The next prime is 1021217.

1021201 is nontrivially palindromic in base 10.

1021201 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 524176 + 497025 = 724^2 + 705^2 .

It is a cyclic number.

It is not a de Polignac number, because 1021201 - 21 = 1021199 is a prime.

It is a Duffinian number.

1021201 is a lucky number.

It is a nialpdrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (1021261) 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, 8310 + ... + 8431.

It is an arithmetic number, because the mean of its divisors is an integer number (259501).

21021201 is an apocalyptic number.

It is an amenable number.

1021201 is a deficient number, since it is larger than the sum of its proper divisors (16803).

1021201 is an equidigital number, since it uses as much as digits as its factorization.

1021201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16802.

The product of its (nonzero) digits is 4, while the sum is 7.

The square root of 1021201 is about 1010.5449025155. The cubic root of 1021201 is about 100.7017637563.

The spelling of 1021201 in words is "one million, twenty-one thousand, two hundred one".

Divisors: 1 61 16741 1021201