Base | Representation |
---|---|
bin | 1001101001100101100001… |
… | …00110000100101011101111 |
3 | 2210010121210100011000220021 |
4 | 10310302300212010223233 |
5 | 10240132231402303121 |
6 | 113044214021303011 |
7 | 4320046614145126 |
oct | 464626046045357 |
9 | 83117710130807 |
10 | 21220101212911 |
11 | 6841437a22987 |
12 | 2468720b64a67 |
13 | bac07c222c63 |
14 | 5350b6296abd |
15 | 26beb4631641 |
hex | 134cb0984aef |
21220101212911 has 2 divisors, whose sum is σ = 21220101212912. Its totient is φ = 21220101212910.
The previous prime is 21220101212903. The next prime is 21220101212939. The reversal of 21220101212911 is 11921210102212.
It is a weak prime.
It is a cyclic number.
It is not a de Polignac number, because 21220101212911 - 23 = 21220101212903 is a prime.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (21220101212971) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10610050606455 + 10610050606456.
It is an arithmetic number, because the mean of its divisors is an integer number (10610050606456).
Almost surely, 221220101212911 is an apocalyptic number.
21220101212911 is a deficient number, since it is larger than the sum of its proper divisors (1).
21220101212911 is an equidigital number, since it uses as much as digits as its factorization.
21220101212911 is an evil number, because the sum of its binary digits is even.
The product of its (nonzero) digits is 288, while the sum is 25.
The spelling of 21220101212911 in words is "twenty-one trillion, two hundred twenty billion, one hundred one million, two hundred twelve thousand, nine hundred eleven".
• e-mail: info -at- numbersaplenty.com • Privacy notice • done in 0.068 sec. • engine limits •