Base | Representation |
---|---|
bin | 11101110101001110100101… |
… | …011110011011111010101101 |
3 | 122012112201002011222200121112 |
4 | 131311032211132123322231 |
5 | 114144044414401211341 |
6 | 1143012550032041405 |
7 | 36430653420062456 |
oct | 3565164536337255 |
9 | 565481064880545 |
10 | 131201142210221 |
11 | 38894101409806 |
12 | 1286b7b1093265 |
13 | 58292a36ac415 |
14 | 245825229212d |
15 | 1027c996a6aeb |
hex | 7753a579bead |
131201142210221 has 16 divisors (see below), whose sum is σ = 132529018288128. Its totient is φ = 129877906334400.
The previous prime is 131201142210157. The next prime is 131201142210233. The reversal of 131201142210221 is 122012241102131.
It is a cyclic number.
It is not a de Polignac number, because 131201142210221 - 26 = 131201142210157 is a prime.
It is a Duffinian number.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (131201142210121) by changing a digit.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1140613691 + ... + 1140728711.
It is an arithmetic number, because the mean of its divisors is an integer number (8283063643008).
Almost surely, 2131201142210221 is an apocalyptic number.
It is an amenable number.
131201142210221 is a deficient number, since it is larger than the sum of its proper divisors (1327876077907).
131201142210221 is a wasteful number, since it uses less digits than its factorization.
131201142210221 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 135092.
The product of its (nonzero) digits is 384, while the sum is 23.
Adding to 131201142210221 its reverse (122012241102131), we get a palindrome (253213383312352).
The spelling of 131201142210221 in words is "one hundred thirty-one trillion, two hundred one billion, one hundred forty-two million, two hundred ten thousand, two hundred twenty-one".
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