Base | Representation |
---|---|
bin | 1001101001100101100010… |
… | …01100010000001101100111 |
3 | 2210010121211000222112020201 |
4 | 10310302301030100031213 |
5 | 10240132241433042412 |
6 | 113044215020011331 |
7 | 4320050065212034 |
oct | 464626114201547 |
9 | 83117730875221 |
10 | 21220111221607 |
11 | 6841442639631 |
12 | 2468724390b47 |
13 | bac08131876c |
14 | 5350b774038b |
15 | 26beb545be57 |
hex | 134cb1310367 |
21220111221607 has 8 divisors (see below), whose sum is σ = 21226972072320. Its totient is φ = 21213251255040.
The previous prime is 21220111221581. The next prime is 21220111221679. The reversal of 21220111221607 is 70612211102212.
It is a sphenic number, since it is the product of 3 distinct primes.
It is a cyclic number.
It is not a de Polignac number, because 21220111221607 - 27 = 21220111221479 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 (21220111221697) by changing a digit.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 49589019 + ... + 50015107.
It is an arithmetic number, because the mean of its divisors is an integer number (2653371509040).
Almost surely, 221220111221607 is an apocalyptic number.
21220111221607 is a deficient number, since it is larger than the sum of its proper divisors (6860850713).
21220111221607 is a wasteful number, since it uses less digits than its factorization.
21220111221607 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 442073.
The product of its (nonzero) digits is 1344, while the sum is 28.
Adding to 21220111221607 its reverse (70612211102212), we get a palindrome (91832322323819).
The spelling of 21220111221607 in words is "twenty-one trillion, two hundred twenty billion, one hundred eleven million, two hundred twenty-one thousand, six hundred seven".
• e-mail: info -at- numbersaplenty.com • Privacy notice • done in 0.071 sec. • engine limits •