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1022101 = 3132971
BaseRepresentation
bin11111001100010010101
31220221001121
43321202111
5230201401
633523541
711454613
oct3714225
91827047
101022101
11638a13
124135b1
1329a2c2
141c86b3
15152ca1
hexf9895

1022101 has 4 divisors (see below), whose sum is σ = 1055104. Its totient is φ = 989100.

The previous prime is 1022083. The next prime is 1022113. The reversal of 1022101 is 1012201.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1022101 - 27 = 1021973 is a prime.

It is a super-3 number, since 3×10221013 = 3203337473787888903, which contains 333 as substring.

It is an Ulam number.

It is a Duffinian number.

1022101 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1022141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16455 + ... + 16516.

It is an arithmetic number, because the mean of its divisors is an integer number (263776).

21022101 is an apocalyptic number.

It is an amenable number.

1022101 is a deficient number, since it is larger than the sum of its proper divisors (33003).

1022101 is an equidigital number, since it uses as much as digits as its factorization.

1022101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33002.

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

The square root of 1022101 is about 1010.9901087548. The cubic root of 1022101 is about 100.7313384027.

Adding to 1022101 its reverse (1012201), we get a palindrome (2034302).

The spelling of 1022101 in words is "one million, twenty-two thousand, one hundred one".

Divisors: 1 31 32971 1022101