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110020121 = 332933049
BaseRepresentation
bin1101000111011…
…00011000011001
321200000121020022
412203230120121
5211131120441
614530040225
72504104241
oct643543031
9250017208
10110020121
1157115822
1230a19075
1319a41583
141087cb21
1599d384b
hex68ec619

110020121 has 4 divisors (see below), whose sum is σ = 110056500. Its totient is φ = 109983744.

The previous prime is 110020117. The next prime is 110020123. The reversal of 110020121 is 121020011.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 121020011 = 717288573.

It can be written as a sum of positive squares in 2 ways, for example, as 13980121 + 96040000 = 3739^2 + 9800^2 .

It is a cyclic number.

It is not a de Polignac number, because 110020121 - 22 = 110020117 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 110020099 and 110020108.

It is not an unprimeable number, because it can be changed into a prime (110020123) 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 3 ways as a sum of consecutive naturals, for example, 13196 + ... + 19853.

It is an arithmetic number, because the mean of its divisors is an integer number (27514125).

Almost surely, 2110020121 is an apocalyptic number.

It is an amenable number.

110020121 is a deficient number, since it is larger than the sum of its proper divisors (36379).

110020121 is an equidigital number, since it uses as much as digits as its factorization.

110020121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36378.

The product of its (nonzero) digits is 4, while the sum is 8.

The square root of 110020121 is about 10489.0476688782. The cubic root of 110020121 is about 479.1711985188.

Adding to 110020121 its reverse (121020011), we get a palindrome (231040132).

The spelling of 110020121 in words is "one hundred ten million, twenty thousand, one hundred twenty-one".

Divisors: 1 3329 33049 110020121