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120022110121 = 990112122221
BaseRepresentation
bin110111111000111100…
…0000000111110101001
3102110210112202220212211
41233301320000332221
53431301130010441
6131045402205121
711446155050254
oct1576170007651
9373715686784
10120022110121
11469a0396851
121b3171b37a1
13b419959094
145b4826009b
1531c6dc1a81
hex1bf1e00fa9

120022110121 has 4 divisors (see below), whose sum is σ = 120034242244. Its totient is φ = 120009978000.

The previous prime is 120022110119. The next prime is 120022110139. The reversal of 120022110121 is 121011220021.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 121011220021 = 990112222121.

It can be written as a sum of positive squares in 2 ways, for example, as 83680025625 + 36342084496 = 289275^2 + 190636^2 .

It is a cyclic number.

It is not a de Polignac number, because 120022110121 - 21 = 120022110119 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (120022110521) 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, 6051210 + ... + 6071011.

It is an arithmetic number, because the mean of its divisors is an integer number (30008560561).

Almost surely, 2120022110121 is an apocalyptic number.

It is an amenable number.

120022110121 is a deficient number, since it is larger than the sum of its proper divisors (12132123).

120022110121 is an equidigital number, since it uses as much as digits as its factorization.

120022110121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12132122.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 120022110121 its reverse (121011220021), we get a palindrome (241033330142).

The spelling of 120022110121 in words is "one hundred twenty billion, twenty-two million, one hundred ten thousand, one hundred twenty-one".

Divisors: 1 9901 12122221 120022110121